56563077387 has 16 divisors (see below), whose sum is σ = 79391840000. Its totient is φ = 35721769824.

The previous prime is 56563077379. The next prime is 56563077397. The reversal of 56563077387 is 78377036565.

It is not a de Polignac number, because 56563077387 - 2³ = 56563077379 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (57).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56563077317) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1609914 + ... + 1644672.

It is an arithmetic number, because the mean of its divisors is an integer number (4961990000).

Almost surely, 2^56563077387 is an apocalyptic number.

56563077387 is a gapful number since it is divisible by the number (57) formed by its first and last digit.

56563077387 is a deficient number, since it is larger than the sum of its proper divisors (22828762613).

56563077387 is a wasteful number, since it uses less digits than its factorization.

56563077387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63330.

The product of its (nonzero) digits is 22226400, while the sum is 57.

The spelling of 56563077387 in words is "fifty-six billion, five hundred sixty-three million, seventy-seven thousand, three hundred eighty-seven".