56776766085154 has 4 divisors (see below), whose sum is σ = 85165149127734. Its totient is φ = 28388383042576.

The previous prime is 56776766085041. The next prime is 56776766085157. The reversal of 56776766085154 is 45158066767765.

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

It can be written as a sum of positive squares in only one way, i.e., 44860993687225 + 11915772397929 = 6697835^2 + 3451923^2 .

It is not an unprimeable number, because it can be changed into a prime (56776766085157) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 14194191521287 + ... + 14194191521290.

Almost surely, 2^{56776766085154} is an apocalyptic number.

56776766085154 is a deficient number, since it is larger than the sum of its proper divisors (28388383042580).

56776766085154 is a wasteful number, since it uses less digits than its factorization.

56776766085154 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28388383042579.

The product of its (nonzero) digits is 1778112000, while the sum is 73.

The spelling of 56776766085154 in words is "fifty-six trillion, seven hundred seventy-six billion, seven hundred sixty-six million, eighty-five thousand, one hundred fifty-four".