56187134861 has 64 divisors (see below), whose sum is σ = 72001681920. Its totient is φ = 43088855040.

The previous prime is 56187134833. The next prime is 56187134873. The reversal of 56187134861 is 16843178165.

It is a happy number.

It is not a de Polignac number, because 56187134861 - 2²² = 56182940557 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 (56187134891) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 9248921 + ... + 9254993.

It is an arithmetic number, because the mean of its divisors is an integer number (1125026280).

Almost surely, 2^56187134861 is an apocalyptic number.

It is an amenable number.

56187134861 is a deficient number, since it is larger than the sum of its proper divisors (15814547059).

56187134861 is a wasteful number, since it uses less digits than its factorization.

56187134861 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6246.

The product of its digits is 967680, while the sum is 50.

The spelling of 56187134861 in words is "fifty-six billion, one hundred eighty-seven million, one hundred thirty-four thousand, eight hundred sixty-one".