56518673019 has 16 divisors (see below), whose sum is σ = 79617185280. Its totient is φ = 35564274720.

The previous prime is 56518672963. The next prime is 56518673027. The reversal of 56518673019 is 91037681565.

It is not a de Polignac number, because 56518673019 - 2⁷ = 56518672891 is a prime.

It is a super-2 number, since 2×56518673019² (a number of 22 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (56518673719) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1813992 + ... + 1844885.

It is an arithmetic number, because the mean of its divisors is an integer number (4976074080).

Almost surely, 2^56518673019 is an apocalyptic number.

56518673019 is a deficient number, since it is larger than the sum of its proper divisors (23098512261).

56518673019 is a wasteful number, since it uses less digits than its factorization.

56518673019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3659170.

The product of its (nonzero) digits is 1360800, while the sum is 51.

The spelling of 56518673019 in words is "fifty-six billion, five hundred eighteen million, six hundred seventy-three thousand, nineteen".