86139478137 has 16 divisors (see below), whose sum is σ = 115208957952. Its totient is φ = 57248232720.

The previous prime is 86139478109. The next prime is 86139478199. The reversal of 86139478137 is 73187493168.

It is a happy number.

It is not a de Polignac number, because 86139478137 - 2¹¹ = 86139476089 is a prime.

It is not an unprimeable number, because it can be changed into a prime (86139478637) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 9246712 + ... + 9256022.

It is an arithmetic number, because the mean of its divisors is an integer number (7200559872).

Almost surely, 2^86139478137 is an apocalyptic number.

It is an amenable number.

86139478137 is a deficient number, since it is larger than the sum of its proper divisors (29069479815).

86139478137 is a wasteful number, since it uses less digits than its factorization.

86139478137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18548.

The product of its digits is 6096384, while the sum is 57.

The spelling of 86139478137 in words is "eighty-six billion, one hundred thirty-nine million, four hundred seventy-eight thousand, one hundred thirty-seven".