56606331663 has 24 divisors (see below), whose sum is σ = 93548494208. Its totient is φ = 32310779472.

The previous prime is 56606331637. The next prime is 56606331671. The reversal of 56606331663 is 36613360665.

56606331663 is a `hidden beast` number, since 5 + 6 + 6 + 0 + 633 + 1 + 6 + 6 + 3 = 666.

It is not a de Polignac number, because 56606331663 - 2⁸ = 56606331407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56606331263) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 438181 + ... + 552462.

Almost surely, 2^56606331663 is an apocalyptic number.

56606331663 is a deficient number, since it is larger than the sum of its proper divisors (36942162545).

56606331663 is a wasteful number, since it uses less digits than its factorization.

56606331663 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 991563 (or 991560 counting only the distinct ones).

The product of its (nonzero) digits is 1049760, while the sum is 45.

The spelling of 56606331663 in words is "fifty-six billion, six hundred six million, three hundred thirty-one thousand, six hundred sixty-three".