86991167055 has 32 divisors (see below), whose sum is σ = 152003658240. Its totient is φ = 42223224960.

The previous prime is 86991167047. The next prime is 86991167059. The reversal of 86991167055 is 55076119968.

It is not a de Polignac number, because 86991167055 - 2³ = 86991167047 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 86991166986 and 86991167004.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (86991167059) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 3127765 + ... + 3155454.

It is an arithmetic number, because the mean of its divisors is an integer number (4750114320).

Almost surely, 2^86991167055 is an apocalyptic number.

86991167055 is a deficient number, since it is larger than the sum of its proper divisors (65012491185).

86991167055 is a wasteful number, since it uses less digits than its factorization.

86991167055 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6283311.

The product of its (nonzero) digits is 4082400, while the sum is 57.

The spelling of 86991167055 in words is "eighty-six billion, nine hundred ninety-one million, one hundred sixty-seven thousand, fifty-five".