56658756997 has 2 divisors, whose sum is σ = 56658756998. Its totient is φ = 56658756996.

The previous prime is 56658756943. The next prime is 56658757007. The reversal of 56658756997 is 79965785665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 56658756961 + 36 = 238031^2 + 6^2 .

It is a cyclic number.

It is not a de Polignac number, because 56658756997 - 2¹⁵ = 56658724229 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56658756097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28329378498 + 28329378499.

It is an arithmetic number, because the mean of its divisors is an integer number (28329378499).

Almost surely, 2^56658756997 is an apocalyptic number.

It is an amenable number.

56658756997 is a deficient number, since it is larger than the sum of its proper divisors (1).

56658756997 is an equidigital number, since it uses as much as digits as its factorization.

56658756997 is an evil number, because the sum of its binary digits is even.

The product of its digits is 857304000, while the sum is 73.

The spelling of 56658756997 in words is "fifty-six billion, six hundred fifty-eight million, seven hundred fifty-six thousand, nine hundred ninety-seven".