56375371787 has 4 divisors (see below), whose sum is σ = 64428996336. Its totient is φ = 48321747240.

The previous prime is 56375371781. The next prime is 56375371807. The reversal of 56375371787 is 78717357365.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 56375371787 - 2⁴ = 56375371771 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56375371781) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4026812264 + ... + 4026812277.

It is an arithmetic number, because the mean of its divisors is an integer number (16107249084).

Almost surely, 2^56375371787 is an apocalyptic number.

56375371787 is a deficient number, since it is larger than the sum of its proper divisors (8053624549).

56375371787 is an equidigital number, since it uses as much as digits as its factorization.

56375371787 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8053624548.

The product of its digits is 25930800, while the sum is 59.

The spelling of 56375371787 in words is "fifty-six billion, three hundred seventy-five million, three hundred seventy-one thousand, seven hundred eighty-seven".