86176961993 has 2 divisors, whose sum is σ = 86176961994. Its totient is φ = 86176961992.

The previous prime is 86176961957. The next prime is 86176962167. The reversal of 86176961993 is 39916967168.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 71055832969 + 15121129024 = 266563^2 + 122968^2 .

It is a cyclic number.

It is not a de Polignac number, because 86176961993 - 2²⁴ = 86160184777 is a prime.

It is not a weakly prime, because it can be changed into another prime (86176961953) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43088480996 + 43088480997.

It is an arithmetic number, because the mean of its divisors is an integer number (43088480997).

Almost surely, 2^86176961993 is an apocalyptic number.

It is an amenable number.

86176961993 is a deficient number, since it is larger than the sum of its proper divisors (1).

86176961993 is an equidigital number, since it uses as much as digits as its factorization.

86176961993 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 26453952, while the sum is 65.

The spelling of 86176961993 in words is "eighty-six billion, one hundred seventy-six million, nine hundred sixty-one thousand, nine hundred ninety-three".