138366346944 has 112 divisors (see below), whose sum is σ = 436584595968. Its totient is φ = 37814396928.

The previous prime is 138366346933. The next prime is 138366346961. The reversal of 138366346944 is 449643663831.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (112).

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2207157 + ... + 2268980.

Almost surely, 2^138366346944 is an apocalyptic number.

138366346944 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

138366346944 is an abundant number, since it is smaller than the sum of its proper divisors (298218249024).

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

138366346944 is a wasteful number, since it uses less digits than its factorization.

138366346944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4476182 (or 4476172 counting only the distinct ones).

The product of its digits is 26873856, while the sum is 57.

The spelling of 138366346944 in words is "one hundred thirty-eight billion, three hundred sixty-six million, three hundred forty-six thousand, nine hundred forty-four".