138072465488 has 20 divisors (see below), whose sum is σ = 267663175008. Its totient is φ = 68998097760.

The previous prime is 138072465451. The next prime is 138072465497. The reversal of 138072465488 is 884564270831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2353556 + ... + 2411507.

Almost surely, 2^138072465488 is an apocalyptic number.

It is an amenable number.

138072465488 is a deficient number, since it is larger than the sum of its proper divisors (129590709520).

138072465488 is a wasteful number, since it uses less digits than its factorization.

138072465488 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4766882 (or 4766876 counting only the distinct ones).

The product of its (nonzero) digits is 10321920, while the sum is 56.

The spelling of 138072465488 in words is "one hundred thirty-eight billion, seventy-two million, four hundred sixty-five thousand, four hundred eighty-eight".