56651131278 has 24 divisors (see below), whose sum is σ = 140278992048. Its totient is φ = 16186037472.

The previous prime is 56651131231. The next prime is 56651131289. The reversal of 56651131278 is 87213115665.

56651131278 is a `hidden beast` number, since 5 + 6 + 6 + 511 + 3 + 127 + 8 = 666.

56651131278 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 224805951 + ... + 224806202.

It is an arithmetic number, because the mean of its divisors is an integer number (5844958002).

Almost surely, 2^56651131278 is an apocalyptic number.

56651131278 is an abundant number, since it is smaller than the sum of its proper divisors (83627860770).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

56651131278 is a wasteful number, since it uses less digits than its factorization.

56651131278 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 449612168 (or 449612165 counting only the distinct ones).

The product of its digits is 302400, while the sum is 45.

The spelling of 56651131278 in words is "fifty-six billion, six hundred fifty-one million, one hundred thirty-one thousand, two hundred seventy-eight".