138769660324 has 9 divisors (see below), whose sum is σ = 242848209387. Its totient is φ = 69384457644.

The previous prime is 138769660313. The next prime is 138769660391. The reversal of 138769660324 is 423066967831.

The square root of 138769660324 is 372518.

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

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 651907 + ... + 838165.

Almost surely, 2^138769660324 is an apocalyptic number.

138769660324 is the 372518-th square number.

It is an amenable number.

138769660324 is a deficient number, since it is larger than the sum of its proper divisors (104078549063).

138769660324 is an frugal number, since it uses more digits than its factorization.

138769660324 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 372522 (or 186261 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 55.

The spelling of 138769660324 in words is "one hundred thirty-eight billion, seven hundred sixty-nine million, six hundred sixty thousand, three hundred twenty-four".