138765275265 has 16 divisors (see below), whose sum is σ = 228025101888. Its totient is φ = 72007926336.

The previous prime is 138765275261. The next prime is 138765275281. The reversal of 138765275265 is 562572567831.

It is not a de Polignac number, because 138765275265 - 2² = 138765275261 is a prime.

It is not an unprimeable number, because it can be changed into a prime (138765275261) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 125013207 + ... + 125014316.

It is an arithmetic number, because the mean of its divisors is an integer number (14251568868).

Almost surely, 2^138765275265 is an apocalyptic number.

138765275265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

138765275265 is a deficient number, since it is larger than the sum of its proper divisors (89259826623).

138765275265 is a wasteful number, since it uses less digits than its factorization.

138765275265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 250027568.

The product of its digits is 21168000, while the sum is 57.

The spelling of 138765275265 in words is "one hundred thirty-eight billion, seven hundred sixty-five million, two hundred seventy-five thousand, two hundred sixty-five".