138268775082264 has 32 divisors (see below), whose sum is σ = 345681459118320. Its totient is φ = 46088322172416.

The previous prime is 138268775082253. The next prime is 138268775082271. The reversal of 138268775082264 is 462280577862831.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 78455437 + ... + 80198460.

Almost surely, 2^{138268775082264} is an apocalyptic number.

It is an amenable number.

138268775082264 is an abundant number, since it is smaller than the sum of its proper divisors (207412684036056).

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

138268775082264 is a wasteful number, since it uses less digits than its factorization.

138268775082264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158690219 (or 158690215 counting only the distinct ones).

The product of its (nonzero) digits is 433520640, while the sum is 69.

The spelling of 138268775082264 in words is "one hundred thirty-eight trillion, two hundred sixty-eight billion, seven hundred seventy-five million, eighty-two thousand, two hundred sixty-four".