56778956730 has 48 divisors (see below), whose sum is σ = 147756309480. Its totient is φ = 15127617024.

The previous prime is 56778956701. The next prime is 56778956743. The reversal of 56778956730 is 3765987765.

56778956730 is a `hidden beast` number, since 5 + 67 + 7 + 8 + 9 + 567 + 3 + 0 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 49983097761 + 6795858969 = 223569^2 + 82437^2 .

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 177787 + ... + 381006.

Almost surely, 2^56778956730 is an apocalyptic number.

56778956730 is an abundant number, since it is smaller than the sum of its proper divisors (90977352750).

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

56778956730 is a wasteful number, since it uses less digits than its factorization.

56778956730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 559935 (or 559932 counting only the distinct ones).

The product of its (nonzero) digits is 66679200, while the sum is 63.

The spelling of 56778956730 in words is "fifty-six billion, seven hundred seventy-eight million, nine hundred fifty-six thousand, seven hundred thirty".