86155967791 has 2 divisors, whose sum is σ = 86155967792. Its totient is φ = 86155967790.

The previous prime is 86155967783. The next prime is 86155967857. The reversal of 86155967791 is 19776955168.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86155967791 - 2³ = 86155967783 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86155961791) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43077983895 + 43077983896.

It is an arithmetic number, because the mean of its divisors is an integer number (43077983896).

Almost surely, 2^86155967791 is an apocalyptic number.

86155967791 is a deficient number, since it is larger than the sum of its proper divisors (1).

86155967791 is an equidigital number, since it uses as much as digits as its factorization.

86155967791 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 28576800, while the sum is 64.

The spelling of 86155967791 in words is "eighty-six billion, one hundred fifty-five million, nine hundred sixty-seven thousand, seven hundred ninety-one".