86171379667 has 2 divisors, whose sum is σ = 86171379668. Its totient is φ = 86171379666.

The previous prime is 86171379571. The next prime is 86171379691. The reversal of 86171379667 is 76697317168.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-86171379667 is a prime.

It is a super-2 number, since 2×86171379667² (a number of 23 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (86171373667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 43085689833 + 43085689834.

It is an arithmetic number, because the mean of its divisors is an integer number (43085689834).

Almost surely, 2^86171379667 is an apocalyptic number.

86171379667 is a deficient number, since it is larger than the sum of its proper divisors (1).

86171379667 is an equidigital number, since it uses as much as digits as its factorization.

86171379667 is an evil number, because the sum of its binary digits is even.

The product of its digits is 16003008, while the sum is 61.

The spelling of 86171379667 in words is "eighty-six billion, one hundred seventy-one million, three hundred seventy-nine thousand, six hundred sixty-seven".