56861663727 has 64 divisors (see below), whose sum is σ = 91262287872. Its totient is φ = 31121376000.

The previous prime is 56861663723. The next prime is 56861663741. The reversal of 56861663727 is 72736616865.

It is not a de Polignac number, because 56861663727 - 2² = 56861663723 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56861663723) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 935218 + ... + 994160.

It is an arithmetic number, because the mean of its divisors is an integer number (1425973248).

Almost surely, 2^56861663727 is an apocalyptic number.

56861663727 is a deficient number, since it is larger than the sum of its proper divisors (34400624145).

56861663727 is a wasteful number, since it uses less digits than its factorization.

56861663727 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59052.

The product of its digits is 15240960, while the sum is 57.

The spelling of 56861663727 in words is "fifty-six billion, eight hundred sixty-one million, six hundred sixty-three thousand, seven hundred twenty-seven".