86172945255 has 16 divisors (see below), whose sum is σ = 153196347360. Its totient is φ = 45958904064.

The previous prime is 86172945251. The next prime is 86172945347. The reversal of 86172945255 is 55254927168.

86172945255 is a `hidden beast` number, since 86 + 17 + 29 + 4 + 525 + 5 = 666.

It is not a de Polignac number, because 86172945255 - 2² = 86172945251 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86172945251) 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 in 15 ways as a sum of consecutive naturals, for example, 319158922 + ... + 319159191.

It is an arithmetic number, because the mean of its divisors is an integer number (9574771710).

Almost surely, 2^86172945255 is an apocalyptic number.

86172945255 is a deficient number, since it is larger than the sum of its proper divisors (67023402105).

86172945255 is a wasteful number, since it uses less digits than its factorization.

86172945255 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 638318127 (or 638318121 counting only the distinct ones).

The product of its digits is 6048000, while the sum is 54.

The spelling of 86172945255 in words is "eighty-six billion, one hundred seventy-two million, nine hundred forty-five thousand, two hundred fifty-five".