13166959305431 has 2 divisors, whose sum is σ = 13166959305432. Its totient is φ = 13166959305430.

The previous prime is 13166959305349. The next prime is 13166959305449. The reversal of 13166959305431 is 13450395966131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 13166959305431 - 2²² = 13166955111127 is a prime.

It is a super-2 number, since 2×13166959305431² (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 (13166959307431) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6583479652715 + 6583479652716.

It is an arithmetic number, because the mean of its divisors is an integer number (6583479652716).

Almost surely, 2^{13166959305431} is an apocalyptic number.

13166959305431 is a deficient number, since it is larger than the sum of its proper divisors (1).

13166959305431 is an equidigital number, since it uses as much as digits as its factorization.

13166959305431 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 7873200, while the sum is 56.

The spelling of 13166959305431 in words is "thirteen trillion, one hundred sixty-six billion, nine hundred fifty-nine million, three hundred five thousand, four hundred thirty-one".