86115818889 has 6 divisors (see below), whose sum is σ = 124389516186. Its totient is φ = 57410545920.

The previous prime is 86115818881. The next prime is 86115818891. The reversal of 86115818889 is 98881851168.

86115818889 is a `hidden beast` number, since 8 + 611 + 5 + 8 + 1 + 8 + 8 + 8 + 9 = 666.

It can be written as a sum of positive squares in only one way, i.e., 81979142400 + 4136676489 = 286320^2 + 64317^2 .

It is not a de Polignac number, because 86115818889 - 2³ = 86115818881 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86115818881) 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 5 ways as a sum of consecutive naturals, for example, 4784212152 + ... + 4784212169.

It is an arithmetic number, because the mean of its divisors is an integer number (20731586031).

Almost surely, 2^86115818889 is an apocalyptic number.

It is an amenable number.

86115818889 is a deficient number, since it is larger than the sum of its proper divisors (38273697297).

86115818889 is a wasteful number, since it uses less digits than its factorization.

86115818889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9568424327 (or 9568424324 counting only the distinct ones).

The product of its digits is 8847360, while the sum is 63.

The spelling of 86115818889 in words is "eighty-six billion, one hundred fifteen million, eight hundred eighteen thousand, eight hundred eighty-nine".