56720998883 has 2 divisors, whose sum is σ = 56720998884. Its totient is φ = 56720998882.

The previous prime is 56720998847. The next prime is 56720998903. The reversal of 56720998883 is 38889902765.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-56720998883 is a prime.

It is not a weakly prime, because it can be changed into another prime (56720928883) 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, 28360499441 + 28360499442.

It is an arithmetic number, because the mean of its divisors is an integer number (28360499442).

Almost surely, 2^56720998883 is an apocalyptic number.

56720998883 is a deficient number, since it is larger than the sum of its proper divisors (1).

56720998883 is an equidigital number, since it uses as much as digits as its factorization.

56720998883 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 52254720, while the sum is 65.

The spelling of 56720998883 in words is "fifty-six billion, seven hundred twenty million, nine hundred ninety-eight thousand, eight hundred eighty-three".