138374304672 has 24 divisors (see below), whose sum is σ = 363232550016. Its totient is φ = 46124768192.

The previous prime is 138374304659. The next prime is 138374304689. The reversal of 138374304672 is 276403473831.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 720699408 + ... + 720699599.

It is an arithmetic number, because the mean of its divisors is an integer number (15134689584).

Almost surely, 2^138374304672 is an apocalyptic number.

138374304672 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138374304672 is an abundant number, since it is smaller than the sum of its proper divisors (224858245344).

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

138374304672 is a wasteful number, since it uses less digits than its factorization.

138374304672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1441399020 (or 1441399012 counting only the distinct ones).

The product of its (nonzero) digits is 2032128, while the sum is 48.

The spelling of 138374304672 in words is "one hundred thirty-eight billion, three hundred seventy-four million, three hundred four thousand, six hundred seventy-two".