138299679744 has 88 divisors (see below), whose sum is σ = 369806893248. Its totient is φ = 45951344640.

The previous prime is 138299679737. The next prime is 138299679767. The reversal of 138299679744 is 447976992831.

It is a happy number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 883014 + ... + 1027770.

Almost surely, 2^138299679744 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 138299679744, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (184903446624).

138299679744 is an abundant number, since it is smaller than the sum of its proper divisors (231507213504).

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

138299679744 is a wasteful number, since it uses less digits than its factorization.

138299679744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 145091 (or 145073 counting only the distinct ones).

The product of its digits is 164602368, while the sum is 69.

The spelling of 138299679744 in words is "one hundred thirty-eight billion, two hundred ninety-nine million, six hundred seventy-nine thousand, seven hundred forty-four".