12571044657 has 32 divisors (see below), whose sum is σ = 17758642176. Its totient is φ = 7893547200.

The previous prime is 12571044653. The next prime is 12571044659. The reversal of 12571044657 is 75644017521.

It is not a de Polignac number, because 12571044657 - 2² = 12571044653 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12571044653) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 7754307 + ... + 7755927.

It is an arithmetic number, because the mean of its divisors is an integer number (554957568).

Almost surely, 2^12571044657 is an apocalyptic number.

It is an amenable number.

12571044657 is a deficient number, since it is larger than the sum of its proper divisors (5187597519).

12571044657 is a wasteful number, since it uses less digits than its factorization.

12571044657 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3301.

The product of its (nonzero) digits is 235200, while the sum is 42.

The spelling of 12571044657 in words is "twelve billion, five hundred seventy-one million, forty-four thousand, six hundred fifty-seven".