86915054187 has 32 divisors (see below), whose sum is σ = 138743055360. Its totient is φ = 53457196320.

The previous prime is 86915054173. The next prime is 86915054189. The reversal of 86915054187 is 78145051968.

It is a happy number.

86915054187 is a `hidden beast` number, since 8 + 6 + 9 + 15 + 0 + 541 + 87 = 666.

It is not a de Polignac number, because 86915054187 - 2¹⁰ = 86915053163 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86915054189) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 590548 + ... + 722894.

It is an arithmetic number, because the mean of its divisors is an integer number (4335720480).

Almost surely, 2^86915054187 is an apocalyptic number.

86915054187 is a deficient number, since it is larger than the sum of its proper divisors (51828001173).

86915054187 is a wasteful number, since it uses less digits than its factorization.

86915054187 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 134240 (or 134234 counting only the distinct ones).

The product of its (nonzero) digits is 2419200, while the sum is 54.

The spelling of 86915054187 in words is "eighty-six billion, nine hundred fifteen million, fifty-four thousand, one hundred eighty-seven".