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975985142900 = 2252192930757697
BaseRepresentation
bin11100011001111010011…
…11110110110001110100
310110022012002020021200012
432030331033312301310
5111442304144033100
62024210020435352
7130340551556255
oct16147517666164
93408162207605
10975985142900
11346a05195359
1213919b548b58
137105bb99c21
1435348c60b2c
151a5c32dd135
hexe33d3f6c74

975985142900 has 144 divisors (see below), whose sum is σ = 2313782116800. Its totient is φ = 355924316160.

The previous prime is 975985142861. The next prime is 975985142911. The reversal of 975985142900 is 9241589579.

It is a self number, because there is not a number n which added to its sum of digits gives 975985142900.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 16886852 + ... + 16944548.

Almost surely, 2975985142900 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 975985142900, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1156891058400).

975985142900 is an abundant number, since it is smaller than the sum of its proper divisors (1337796973900).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

975985142900 is a wasteful number, since it uses less digits than its factorization.

975985142900 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58066 (or 58059 counting only the distinct ones).

The product of its (nonzero) digits is 8164800, while the sum is 59.

The spelling of 975985142900 in words is "nine hundred seventy-five billion, nine hundred eighty-five million, one hundred forty-two thousand, nine hundred".

Divisors: 1 2 4 5 10 19 20 25 29 38 50 58 76 95 100 116 145 190 290 307 380 475 551 580 614 725 950 1102 1228 1450 1535 1900 2204 2755 2900 3070 5510 5833 6140 7675 8903 11020 11666 13775 15350 17806 23332 27550 29165 30700 35612 44515 55100 57697 58330 89030 115394 116660 145825 169157 178060 222575 230788 288485 291650 338314 445150 576970 583300 676628 845785 890300 1096243 1153940 1442425 1673213 1691570 2192486 2884850 3346426 3383140 4228925 4384972 5481215 5769700 6692852 8366065 8457850 10962430 16732130 16915700 17712979 21924860 27406075 31791047 33464260 35425958 41830325 54812150 63582094 70851916 83660650 88564895 109624300 127164188 158955235 167321300 177129790 317910470 336546601 354259580 442824475 513676391 635820940 673093202 794776175 885648950 1027352782 1346186404 1589552350 1682733005 1771297900 2054705564 2568381955 3179104700 3365466010 5136763910 6730932020 8413665025 9759851429 10273527820 12841909775 16827330050 19519702858 25683819550 33654660100 39039405716 48799257145 51367639100 97598514290 195197028580 243996285725 487992571450 975985142900