86119431817 has 2 divisors, whose sum is σ = 86119431818. Its totient is φ = 86119431816.

The previous prime is 86119431799. The next prime is 86119431851. The reversal of 86119431817 is 71813491168.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 66290285961 + 19829145856 = 257469^2 + 140816^2 .

It is a cyclic number.

It is not a de Polignac number, because 86119431817 - 2³⁵ = 51759693449 is a prime.

It is not a weakly prime, because it can be changed into another prime (86119431857) 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, 43059715908 + 43059715909.

It is an arithmetic number, because the mean of its divisors is an integer number (43059715909).

Almost surely, 2^86119431817 is an apocalyptic number.

It is an amenable number.

86119431817 is a deficient number, since it is larger than the sum of its proper divisors (1).

86119431817 is an equidigital number, since it uses as much as digits as its factorization.

86119431817 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 49.

The spelling of 86119431817 in words is "eighty-six billion, one hundred nineteen million, four hundred thirty-one thousand, eight hundred seventeen".