86178730155 has 24 divisors (see below), whose sum is σ = 160397964432. Its totient is φ = 39395990592.

The previous prime is 86178730133. The next prime is 86178730163. The reversal of 86178730155 is 55103787168.

It is not a de Polignac number, because 86178730155 - 2²⁶ = 86111621291 is a prime.

It is a super-2 number, since 2×86178730155² (a number of 23 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 86178730098 and 86178730107.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 58624252 + ... + 58625721.

It is an arithmetic number, because the mean of its divisors is an integer number (6683248518).

Almost surely, 2^86178730155 is an apocalyptic number.

86178730155 is a deficient number, since it is larger than the sum of its proper divisors (74219234277).

86178730155 is a wasteful number, since it uses less digits than its factorization.

86178730155 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 117249995 (or 117249988 counting only the distinct ones).

The product of its (nonzero) digits is 1411200, while the sum is 51.

The spelling of 86178730155 in words is "eighty-six billion, one hundred seventy-eight million, seven hundred thirty thousand, one hundred fifty-five".