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57997600000 = 285572497
BaseRepresentation
bin110110000000111011…
…010010010100000000
312112200221201100100021
4312000323102110000
51422234341200000
642351013503224
74122143315554
oct660073222400
9175627640307
1057997600000
112266215132a
12b2a7341b14
135613952612
142b42971864
151796a6911a
hexd80ed2500

57997600000 has 108 divisors (see below), whose sum is σ = 144703543068. Its totient is φ = 23198720000.

The previous prime is 57997599977. The next prime is 57997600079. The reversal of 57997600000 is 679975.

It can be written as a sum of positive squares in 6 ways, for example, as 51372942336 + 6624657664 = 226656^2 + 81392^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 57997600000.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 763752 + ... + 836248.

It is an arithmetic number, because the mean of its divisors is an integer number (1339847621).

Almost surely, 257997600000 is an apocalyptic number.

57997600000 is a gapful number since it is divisible by the number (50) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 57997600000, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (72351771534).

57997600000 is an abundant number, since it is smaller than the sum of its proper divisors (86705943068).

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

57997600000 is an frugal number, since it uses more digits than its factorization.

57997600000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72538 (or 72504 counting only the distinct ones).

The product of its (nonzero) digits is 119070, while the sum is 43.

The spelling of 57997600000 in words is "fifty-seven billion, nine hundred ninety-seven million, six hundred thousand".

Divisors: 1 2 4 5 8 10 16 20 25 32 40 50 64 80 100 125 128 160 200 250 256 320 400 500 625 640 800 1000 1250 1280 1600 2000 2500 3125 3200 4000 5000 6250 6400 8000 10000 12500 16000 20000 25000 32000 40000 50000 72497 80000 100000 144994 160000 200000 289988 362485 400000 579976 724970 800000 1159952 1449940 1812425 2319904 2899880 3624850 4639808 5799760 7249700 9062125 9279616 11599520 14499400 18124250 18559232 23199040 28998800 36248500 45310625 46398080 57997600 72497000 90621250 92796160 115995200 144994000 181242500 226553125 231990400 289988000 362485000 453106250 463980800 579976000 724970000 906212500 1159952000 1449940000 1812425000 2319904000 2899880000 3624850000 5799760000 7249700000 11599520000 14499400000 28998800000 57997600000