138765503320 has 32 divisors (see below), whose sum is σ = 312273843120. Its totient is φ = 55497052800.

The previous prime is 138765503291. The next prime is 138765503321. The reversal of 138765503320 is 23305567831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138765503321) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 37506 + ... + 528145.

Almost surely, 2^138765503320 is an apocalyptic number.

138765503320 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138765503320 is an abundant number, since it is smaller than the sum of its proper divisors (173508339800).

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

138765503320 is a wasteful number, since it uses less digits than its factorization.

138765503320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571795 (or 571791 counting only the distinct ones).

The product of its (nonzero) digits is 453600, while the sum is 43.

The spelling of 138765503320 in words is "one hundred thirty-eight billion, seven hundred sixty-five million, five hundred three thousand, three hundred twenty".