56816181051 has 48 divisors (see below), whose sum is σ = 88790204160. Its totient is φ = 32221237440.

The previous prime is 56816181047. The next prime is 56816181067. The reversal of 56816181051 is 15018161865.

It is not a de Polignac number, because 56816181051 - 2² = 56816181047 is a prime.

It is a super-2 number, since 2×56816181051² (a number of 22 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 56816180994 and 56816181012.

It is not an unprimeable number, because it can be changed into a prime (56816181001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 20153320 + ... + 20156138.

It is an arithmetic number, because the mean of its divisors is an integer number (1849795920).

Almost surely, 2^56816181051 is an apocalyptic number.

56816181051 is a deficient number, since it is larger than the sum of its proper divisors (31974023109).

56816181051 is a wasteful number, since it uses less digits than its factorization.

56816181051 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3824 (or 3817 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 42.

The spelling of 56816181051 in words is "fifty-six billion, eight hundred sixteen million, one hundred eighty-one thousand, fifty-one".