12635588957857 has 8 divisors (see below), whose sum is σ = 12672360398376. Its totient is φ = 12598823035392.

The previous prime is 12635588957851. The next prime is 12635588957863. The reversal of 12635588957857 is 75875988553621.

It is an interprime number because it is at equal distance from previous prime (12635588957851) and next prime (12635588957863).

It can be written as a sum of positive squares in 4 ways, for example, as 4444321720336 + 8191267237521 = 2108156^2 + 2862039^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12635588957857 - 2³¹ = 12633441474209 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12635588957851) 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, 3229243 + ... + 5974879.

It is an arithmetic number, because the mean of its divisors is an integer number (1584045049797).

Almost surely, 2^{12635588957857} is an apocalyptic number.

It is an amenable number.

12635588957857 is a deficient number, since it is larger than the sum of its proper divisors (36771440519).

12635588957857 is a wasteful number, since it uses less digits than its factorization.

12635588957857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2759027.

The product of its digits is 5080320000, while the sum is 79.

The spelling of 12635588957857 in words is "twelve trillion, six hundred thirty-five billion, five hundred eighty-eight million, nine hundred fifty-seven thousand, eight hundred fifty-seven".