56657144099 has 2 divisors, whose sum is σ = 56657144100. Its totient is φ = 56657144098.

The previous prime is 56657144087. The next prime is 56657144143. The reversal of 56657144099 is 99044175665.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 56657144099 - 2⁸ = 56657143843 is a prime.

It is not a weakly prime, because it can be changed into another prime (56657144039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28328572049 + 28328572050.

It is an arithmetic number, because the mean of its divisors is an integer number (28328572050).

Almost surely, 2^56657144099 is an apocalyptic number.

56657144099 is a deficient number, since it is larger than the sum of its proper divisors (1).

56657144099 is an equidigital number, since it uses as much as digits as its factorization.

56657144099 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8164800, while the sum is 56.

The spelling of 56657144099 in words is "fifty-six billion, six hundred fifty-seven million, one hundred forty-four thousand, ninety-nine".