56657790353 has 2 divisors, whose sum is σ = 56657790354. Its totient is φ = 56657790352.

The previous prime is 56657790331. The next prime is 56657790379. The reversal of 56657790353 is 35309775665.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 46767090049 + 9890700304 = 216257^2 + 99452^2 .

It is a cyclic number.

It is not a de Polignac number, because 56657790353 - 2¹² = 56657786257 is a prime.

It is not a weakly prime, because it can be changed into another prime (56657790323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28328895176 + 28328895177.

It is an arithmetic number, because the mean of its divisors is an integer number (28328895177).

Almost surely, 2^56657790353 is an apocalyptic number.

It is an amenable number.

56657790353 is a deficient number, since it is larger than the sum of its proper divisors (1).

56657790353 is an equidigital number, since it uses as much as digits as its factorization.

56657790353 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17860500, while the sum is 56.

The spelling of 56657790353 in words is "fifty-six billion, six hundred fifty-seven million, seven hundred ninety thousand, three hundred fifty-three".