138038055430 has 32 divisors (see below), whose sum is σ = 272418681600. Its totient is φ = 49943409120.

The previous prime is 138038055377. The next prime is 138038055451. The reversal of 138038055430 is 34550830831.

It is a congruent number.

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, 3131104 + ... + 3174883.

It is an arithmetic number, because the mean of its divisors is an integer number (8513083800).

Almost surely, 2^138038055430 is an apocalyptic number.

138038055430 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138038055430 is a deficient number, since it is larger than the sum of its proper divisors (134380626170).

138038055430 is a wasteful number, since it uses less digits than its factorization.

138038055430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6306204.

The product of its (nonzero) digits is 172800, while the sum is 40.

The spelling of 138038055430 in words is "one hundred thirty-eight billion, thirty-eight million, fifty-five thousand, four hundred thirty".