56658756911 has 2 divisors, whose sum is σ = 56658756912. Its totient is φ = 56658756910.

The previous prime is 56658756893. The next prime is 56658756919. The reversal of 56658756911 is 11965785665.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 56658756911 - 2¹⁴ = 56658740527 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (56658756919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 28329378455 + 28329378456.

It is an arithmetic number, because the mean of its divisors is an integer number (28329378456).

Almost surely, 2^56658756911 is an apocalyptic number.

56658756911 is a deficient number, since it is larger than the sum of its proper divisors (1).

56658756911 is an equidigital number, since it uses as much as digits as its factorization.

56658756911 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13608000, while the sum is 59.

The spelling of 56658756911 in words is "fifty-six billion, six hundred fifty-eight million, seven hundred fifty-six thousand, nine hundred eleven".