56550656511 has 12 divisors (see below), whose sum is σ = 81686347392. Its totient is φ = 37699484256.

The previous prime is 56550656497. The next prime is 56550656549. The reversal of 56550656511 is 11565605565.

It is not a de Polignac number, because 56550656511 - 2¹⁸ = 56550394367 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56550656011) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 623995 + ... + 708851.

It is an arithmetic number, because the mean of its divisors is an integer number (6807195616).

Almost surely, 2^56550656511 is an apocalyptic number.

56550656511 is a deficient number, since it is larger than the sum of its proper divisors (25135690881).

56550656511 is a wasteful number, since it uses less digits than its factorization.

56550656511 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 158910 (or 158907 counting only the distinct ones).

The product of its (nonzero) digits is 675000, while the sum is 45.

The spelling of 56550656511 in words is "fifty-six billion, five hundred fifty million, six hundred fifty-six thousand, five hundred eleven".