12857905616 has 40 divisors (see below), whose sum is σ = 25329811080. Its totient is φ = 6322028544.

The previous prime is 12857905597. The next prime is 12857905639. The reversal of 12857905616 is 61650975821.

It can be written as a sum of positive squares in 4 ways, for example, as 246615616 + 12611290000 = 15704^2 + 112300^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 217280 + ... + 270048.

It is an arithmetic number, because the mean of its divisors is an integer number (633245277).

Almost surely, 2^12857905616 is an apocalyptic number.

12857905616 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

12857905616 is a deficient number, since it is larger than the sum of its proper divisors (12471905464).

12857905616 is a wasteful number, since it uses less digits than its factorization.

12857905616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53031 (or 53025 counting only the distinct ones).

The product of its (nonzero) digits is 907200, while the sum is 50.

The spelling of 12857905616 in words is "twelve billion, eight hundred fifty-seven million, nine hundred five thousand, six hundred sixteen".