138311097604 has 9 divisors (see below), whose sum is σ = 242045722471. Its totient is φ = 69155176900.

The previous prime is 138311097599. The next prime is 138311097619. The reversal of 138311097604 is 406790113831.

The square root of 138311097604 is 371902.

It is a perfect power (a square), and thus also a powerful number.

138311097604 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 650829 + ... + 836779.

Almost surely, 2^138311097604 is an apocalyptic number.

138311097604 is the 371902-nd square number.

It is an amenable number.

138311097604 is a deficient number, since it is larger than the sum of its proper divisors (103734624867).

138311097604 is an frugal number, since it uses more digits than its factorization.

138311097604 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 371906 (or 185953 counting only the distinct ones).

The product of its (nonzero) digits is 108864, while the sum is 43.

The spelling of 138311097604 in words is "one hundred thirty-eight billion, three hundred eleven million, ninety-seven thousand, six hundred four".