56558631615 has 16 divisors (see below), whose sum is σ = 95256643200. Its totient is φ = 28576992672.

The previous prime is 56558631607. The next prime is 56558631617. The reversal of 56558631615 is 51613685565.

It is not a de Polignac number, because 56558631615 - 2³ = 56558631607 is a prime.

It is a super-2 number, since 2×56558631615² (a number of 22 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (56558631617) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99225385 + ... + 99225954.

It is an arithmetic number, because the mean of its divisors is an integer number (5953540200).

Almost surely, 2^56558631615 is an apocalyptic number.

56558631615 is a deficient number, since it is larger than the sum of its proper divisors (38698011585).

56558631615 is a wasteful number, since it uses less digits than its factorization.

56558631615 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 198451366.

The product of its digits is 3240000, while the sum is 51.

The spelling of 56558631615 in words is "fifty-six billion, five hundred fifty-eight million, six hundred thirty-one thousand, six hundred fifteen".