86172568928 has 24 divisors (see below), whose sum is σ = 175124900160. Its totient is φ = 41696403840.

The previous prime is 86172568871. The next prime is 86172568957. The reversal of 86172568928 is 82986527168.

It is a super-2 number, since 2×86172568928² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (62).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43432763 + ... + 43434746.

It is an arithmetic number, because the mean of its divisors is an integer number (7296870840).

Almost surely, 2^86172568928 is an apocalyptic number.

It is an amenable number.

86172568928 is an abundant number, since it is smaller than the sum of its proper divisors (88952331232).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

86172568928 is a wasteful number, since it uses less digits than its factorization.

86172568928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86867550 (or 86867542 counting only the distinct ones).

The product of its digits is 23224320, while the sum is 62.

The spelling of 86172568928 in words is "eighty-six billion, one hundred seventy-two million, five hundred sixty-eight thousand, nine hundred twenty-eight".