11657656580831 has 2 divisors, whose sum is σ = 11657656580832. Its totient is φ = 11657656580830.

The previous prime is 11657656580819. The next prime is 11657656580929. The reversal of 11657656580831 is 13808565675611.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11657656580831 is a prime.

It is a super-2 number, since 2×11657656580831² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11657656580431) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5828828290415 + 5828828290416.

It is an arithmetic number, because the mean of its divisors is an integer number (5828828290416).

Almost surely, 2^{11657656580831} is an apocalyptic number.

11657656580831 is a deficient number, since it is larger than the sum of its proper divisors (1).

11657656580831 is an equidigital number, since it uses as much as digits as its factorization.

11657656580831 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 36288000, while the sum is 62.

The spelling of 11657656580831 in words is "eleven trillion, six hundred fifty-seven billion, six hundred fifty-six million, five hundred eighty thousand, eight hundred thirty-one".