56677778340 has 48 divisors (see below), whose sum is σ = 158709441408. Its totient is φ = 15112963584.

The previous prime is 56677778207. The next prime is 56677778347. The reversal of 56677778340 is 4387777665.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is not an unprimeable number, because it can be changed into a prime (56677778347) 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, 1089564 + ... + 1140396.

It is an arithmetic number, because the mean of its divisors is an integer number (3306446696).

Almost surely, 2^56677778340 is an apocalyptic number.

It is an amenable number.

56677778340 is an abundant number, since it is smaller than the sum of its proper divisors (102031663068).

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

56677778340 is a wasteful number, since it uses less digits than its factorization.

56677778340 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 69428 (or 69426 counting only the distinct ones).

The product of its (nonzero) digits is 41489280, while the sum is 60.

The spelling of 56677778340 in words is "fifty-six billion, six hundred seventy-seven million, seven hundred seventy-eight thousand, three hundred forty".