131399979959 has 2 divisors, whose sum is σ = 131399979960. Its totient is φ = 131399979958.

The previous prime is 131399979943. The next prime is 131399979967. The reversal of 131399979959 is 959979993131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131399979959 - 2⁴ = 131399979943 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131399979989) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65699989979 + 65699989980.

It is an arithmetic number, because the mean of its divisors is an integer number (65699989980).

Almost surely, 2^131399979959 is an apocalyptic number.

131399979959 is a deficient number, since it is larger than the sum of its proper divisors (1).

131399979959 is an equidigital number, since it uses as much as digits as its factorization.

131399979959 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 167403915, while the sum is 74.

The spelling of 131399979959 in words is "one hundred thirty-one billion, three hundred ninety-nine million, nine hundred seventy-nine thousand, nine hundred fifty-nine".