138850591086 has 24 divisors (see below), whose sum is σ = 308973839304. Its totient is φ = 45032623920.

The previous prime is 138850591057. The next prime is 138850591097. The reversal of 138850591086 is 680195058831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 104241520 + ... + 104242851.

It is an arithmetic number, because the mean of its divisors is an integer number (12873909971).

Almost surely, 2^138850591086 is an apocalyptic number.

138850591086 is an abundant number, since it is smaller than the sum of its proper divisors (170123248218).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138850591086 is a wasteful number, since it uses less digits than its factorization.

138850591086 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 208484416 (or 208484413 counting only the distinct ones).

The product of its (nonzero) digits is 2073600, while the sum is 54.

The spelling of 138850591086 in words is "one hundred thirty-eight billion, eight hundred fifty million, five hundred ninety-one thousand, eighty-six".