138951934116 has 72 divisors (see below), whose sum is σ = 336388756704. Its totient is φ = 44639992320.

The previous prime is 138951934073. The next prime is 138951934127. The reversal of 138951934116 is 611439159831.

It is an unprimeable number.

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 23 ways as a sum of consecutive naturals, for example, 5750476 + ... + 5774588.

Almost surely, 2^138951934116 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138951934116, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (168194378352).

138951934116 is an abundant number, since it is smaller than the sum of its proper divisors (197436822588).

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

138951934116 is a wasteful number, since it uses less digits than its factorization.

138951934116 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24749 (or 24718 counting only the distinct ones).

The product of its digits is 699840, while the sum is 51.

The spelling of 138951934116 in words is "one hundred thirty-eight billion, nine hundred fifty-one million, nine hundred thirty-four thousand, one hundred sixteen".