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80644006248 = 233131911353269
BaseRepresentation
bin100101100011011000…
…0011110000101101000
321201011012220222111020
41023012300132011220
52310124331144443
6101014120532440
75553301512561
oct1130660360550
9251135828436
1080644006248
1131223491553
1213767621120
1377b269a8c0
143c904d9168
15216ecd0583
hex12c6c1e168

80644006248 has 64 divisors (see below), whose sum is σ = 218255385600. Its totient is φ = 24683608320.

The previous prime is 80644006237. The next prime is 80644006253. The reversal of 80644006248 is 84260044608.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 617043 + ... + 736226.

It is an arithmetic number, because the mean of its divisors is an integer number (3410240400).

Almost surely, 280644006248 is an apocalyptic number.

It is an amenable number.

80644006248 is an abundant number, since it is smaller than the sum of its proper divisors (137611379352).

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

80644006248 is a wasteful number, since it uses less digits than its factorization.

80644006248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1353482 (or 1353478 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 42.

The spelling of 80644006248 in words is "eighty billion, six hundred forty-four million, six thousand, two hundred forty-eight".

Divisors: 1 2 3 4 6 8 12 13 24 26 39 52 78 104 156 191 312 382 573 764 1146 1528 2292 2483 4584 4966 7449 9932 14898 19864 29796 59592 1353269 2706538 4059807 5413076 8119614 10826152 16239228 17592497 32478456 35184994 52777491 70369988 105554982 140739976 211109964 258474379 422219928 516948758 775423137 1033897516 1550846274 2067795032 3101692548 3360166927 6203385096 6720333854 10080500781 13440667708 20161001562 26881335416 40322003124 80644006248