131855187967 has 2 divisors, whose sum is σ = 131855187968. Its totient is φ = 131855187966.

The previous prime is 131855187901. The next prime is 131855188001. The reversal of 131855187967 is 769781558131.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 131855187967 - 2⁷ = 131855187839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (131855187067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 65927593983 + 65927593984.

It is an arithmetic number, because the mean of its divisors is an integer number (65927593984).

Almost surely, 2^131855187967 is an apocalyptic number.

131855187967 is a deficient number, since it is larger than the sum of its proper divisors (1).

131855187967 is an equidigital number, since it uses as much as digits as its factorization.

131855187967 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12700800, while the sum is 61.

The spelling of 131855187967 in words is "one hundred thirty-one billion, eight hundred fifty-five million, one hundred eighty-seven thousand, nine hundred sixty-seven".