56115637523 has 4 divisors (see below), whose sum is σ = 61217059128. Its totient is φ = 51014215920.

The previous prime is 56115637517. The next prime is 56115637541. The reversal of 56115637523 is 32573651165.

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

It is a cyclic number.

It is not a de Polignac number, because 56115637523 - 2¹⁴ = 56115621139 is a prime.

It is a super-2 number, since 2×56115637523² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (56117637523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2550710786 + ... + 2550710807.

It is an arithmetic number, because the mean of its divisors is an integer number (15304264782).

Almost surely, 2^56115637523 is an apocalyptic number.

56115637523 is a deficient number, since it is larger than the sum of its proper divisors (5101421605).

56115637523 is a wasteful number, since it uses less digits than its factorization.

56115637523 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5101421604.

The product of its digits is 567000, while the sum is 44.

The spelling of 56115637523 in words is "fifty-six billion, one hundred fifteen million, six hundred thirty-seven thousand, five hundred twenty-three".