56066656554 has 24 divisors (see below), whose sum is σ = 124760939940. Its totient is φ = 18183780288.

The previous prime is 56066656553. The next prime is 56066656567. The reversal of 56066656554 is 45565666065.

It can be written as a sum of positive squares in 2 ways, for example, as 43046705529 + 13019951025 = 207477^2 + 114105^2 .

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 56066656554.

It is not an unprimeable number, because it can be changed into a prime (56066656553) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 42091419 + ... + 42092750.

Almost surely, 2^56066656554 is an apocalyptic number.

56066656554 is an abundant number, since it is smaller than the sum of its proper divisors (68694283386).

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

56066656554 is a wasteful number, since it uses less digits than its factorization.

56066656554 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84184214 (or 84184211 counting only the distinct ones).

The product of its (nonzero) digits is 19440000, while the sum is 54.

The spelling of 56066656554 in words is "fifty-six billion, sixty-six million, six hundred fifty-six thousand, five hundred fifty-four".