56137818609 has 40 divisors (see below), whose sum is σ = 85711560000. Its totient is φ = 36605387808.

The previous prime is 56137818599. The next prime is 56137818613. The reversal of 56137818609 is 90681873165.

56137818609 is a `hidden beast` number, since 5 + 6 + 13 + 7 + 8 + 18 + 609 = 666.

It is not a de Polignac number, because 56137818609 - 2⁵ = 56137818577 is a prime.

It is not an unprimeable number, because it can be changed into a prime (56137818109) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 921507 + ... + 980535.

It is an arithmetic number, because the mean of its divisors is an integer number (2142789000).

Almost surely, 2^56137818609 is an apocalyptic number.

56137818609 is a gapful number since it is divisible by the number (59) formed by its first and last digit.

It is an amenable number.

56137818609 is a deficient number, since it is larger than the sum of its proper divisors (29573741391).

56137818609 is a wasteful number, since it uses less digits than its factorization.

56137818609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 59299 (or 59290 counting only the distinct ones).

The product of its (nonzero) digits is 2177280, while the sum is 54.

The spelling of 56137818609 in words is "fifty-six billion, one hundred thirty-seven million, eight hundred eighteen thousand, six hundred nine".