57656551679999 has 8 divisors (see below), whose sum is σ = 58509022675968. Its totient is φ = 56805203097720.

The previous prime is 57656551679971. The next prime is 57656551680023. The reversal of 57656551679999 is 99997615565675.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-57656551679999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (57656551672999) 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, 280499927 + ... + 280705400.

It is an arithmetic number, because the mean of its divisors is an integer number (7313627834496).

Almost surely, 2^{57656551679999} is an apocalyptic number.

57656551679999 is a deficient number, since it is larger than the sum of its proper divisors (852470995969).

57656551679999 is a wasteful number, since it uses less digits than its factorization.

57656551679999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 561206845.

The product of its digits is 43401015000, while the sum is 89.

The spelling of 57656551679999 in words is "fifty-seven trillion, six hundred fifty-six billion, five hundred fifty-one million, six hundred seventy-nine thousand, nine hundred ninety-nine".