56816181047 has 2 divisors, whose sum is σ = 56816181048. Its totient is φ = 56816181046.

The previous prime is 56816181041. The next prime is 56816181067. The reversal of 56816181047 is 74018161865.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56816181047 - 2⁴ = 56816181031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 56816180992 and 56816181010.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56816181041) 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 as a sum of consecutive naturals, namely, 28408090523 + 28408090524.

It is an arithmetic number, because the mean of its divisors is an integer number (28408090524).

Almost surely, 2^56816181047 is an apocalyptic number.

56816181047 is a deficient number, since it is larger than the sum of its proper divisors (1).

56816181047 is an equidigital number, since it uses as much as digits as its factorization.

56816181047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 322560, while the sum is 47.

The spelling of 56816181047 in words is "fifty-six billion, eight hundred sixteen million, one hundred eighty-one thousand, forty-seven".