138938966260 has 24 divisors (see below), whose sum is σ = 304457561856. Its totient is φ = 53159256480.

The previous prime is 138938966251. The next prime is 138938966261. The reversal of 138938966260 is 62669839831.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138938966261) 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, 151020156 + ... + 151021075.

It is an arithmetic number, because the mean of its divisors is an integer number (12685731744).

Almost surely, 2^138938966260 is an apocalyptic number.

138938966260 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138938966260 is an abundant number, since it is smaller than the sum of its proper divisors (165518595596).

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

138938966260 is a wasteful number, since it uses less digits than its factorization.

138938966260 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 302041263 (or 302041261 counting only the distinct ones).

The product of its (nonzero) digits is 20155392, while the sum is 61.

The spelling of 138938966260 in words is "one hundred thirty-eight billion, nine hundred thirty-eight million, nine hundred sixty-six thousand, two hundred sixty".