86172463831 has 2 divisors, whose sum is σ = 86172463832. Its totient is φ = 86172463830.

The previous prime is 86172463823. The next prime is 86172463963. The reversal of 86172463831 is 13836427168.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 86172463831 - 2³ = 86172463823 is a prime.

It is a super-2 number, since 2×86172463831² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (86176463831) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43086231915 + 43086231916.

It is an arithmetic number, because the mean of its divisors is an integer number (43086231916).

Almost surely, 2^86172463831 is an apocalyptic number.

86172463831 is a deficient number, since it is larger than the sum of its proper divisors (1).

86172463831 is an equidigital number, since it uses as much as digits as its factorization.

86172463831 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1161216, while the sum is 49.

The spelling of 86172463831 in words is "eighty-six billion, one hundred seventy-two million, four hundred sixty-three thousand, eight hundred thirty-one".