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12604916456 = 2311433331109
BaseRepresentation
bin10111011110100111…
…11100001011101000
31012112110101002201122
423233103330023220
5201303324311311
65442435034412
7624235010366
oct135723741350
935473332648
1012604916456
115389168330
12253943ba08
13125b592162
148780c4636
154db9100db
hex2ef4fc2e8

12604916456 has 32 divisors (see below), whose sum is σ = 26382391200. Its totient is φ = 5596261440.

The previous prime is 12604916437. The next prime is 12604916459. The reversal of 12604916456 is 65461940621.

It is a Harshad number since it is a multiple of its sum of digits (44).

It is not an unprimeable number, because it can be changed into a prime (12604916459) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1661771 + ... + 1669338.

It is an arithmetic number, because the mean of its divisors is an integer number (824449725).

Almost surely, 212604916456 is an apocalyptic number.

It is an amenable number.

12604916456 is an abundant number, since it is smaller than the sum of its proper divisors (13777474744).

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

12604916456 is a wasteful number, since it uses less digits than its factorization.

12604916456 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3331169 (or 3331165 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 44.

The spelling of 12604916456 in words is "twelve billion, six hundred four million, nine hundred sixteen thousand, four hundred fifty-six".

Divisors: 1 2 4 8 11 22 43 44 86 88 172 344 473 946 1892 3784 3331109 6662218 13324436 26648872 36642199 73284398 143237687 146568796 286475374 293137592 572950748 1145901496 1575614557 3151229114 6302458228 12604916456