138441357824 has 80 divisors (see below), whose sum is σ = 344867409216. Its totient is φ = 53938176000.

The previous prime is 138441357739. The next prime is 138441357851. The reversal of 138441357824 is 428753144831.

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, 1716377 + ... + 1795224.

Almost surely, 2^138441357824 is an apocalyptic number.

138441357824 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

138441357824 is an abundant number, since it is smaller than the sum of its proper divisors (206426051392).

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

138441357824 is an equidigital number, since it uses as much as digits as its factorization.

138441357824 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3511637 (or 3511621 counting only the distinct ones).

The product of its digits is 2580480, while the sum is 50.

The spelling of 138441357824 in words is "one hundred thirty-eight billion, four hundred forty-one million, three hundred fifty-seven thousand, eight hundred twenty-four".