138859835604 has 72 divisors (see below), whose sum is σ = 377307308448. Its totient is φ = 39631919040.

The previous prime is 138859835579. The next prime is 138859835633. The reversal of 138859835604 is 406538958831.

It is a Smith number, since the sum of its digits (60) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 427827 + ... + 678789.

It is an arithmetic number, because the mean of its divisors is an integer number (5240379284).

Almost surely, 2^138859835604 is an apocalyptic number.

138859835604 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138859835604, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (188653654224).

138859835604 is an abundant number, since it is smaller than the sum of its proper divisors (238447472844).

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

138859835604 is a wasteful number, since it uses less digits than its factorization.

138859835604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 251925 (or 251916 counting only the distinct ones).

The product of its (nonzero) digits is 24883200, while the sum is 60.

It can be divided in two parts, 13885 and 9835604, that added together give a palindrome (9849489).

The spelling of 138859835604 in words is "one hundred thirty-eight billion, eight hundred fifty-nine million, eight hundred thirty-five thousand, six hundred four".