138079066528 has 24 divisors (see below), whose sum is σ = 292754175588. Its totient is φ = 63728799744.

The previous prime is 138079066519. The next prime is 138079066589. The reversal of 138079066528 is 825660970831.

It can be written as a sum of positive squares in 2 ways, for example, as 108048949264 + 30030117264 = 328708^2 + 173292^2 .

It is a super-2 number, since 2×138079066528² (a number of 23 digits) contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 165960001 + ... + 165960832.

Almost surely, 2^138079066528 is an apocalyptic number.

It is an amenable number.

138079066528 is an abundant number, since it is smaller than the sum of its proper divisors (154675109060).

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

138079066528 is a wasteful number, since it uses less digits than its factorization.

138079066528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331920856 (or 331920848 counting only the distinct ones).

The product of its (nonzero) digits is 4354560, while the sum is 55.

The spelling of 138079066528 in words is "one hundred thirty-eight billion, seventy-nine million, sixty-six thousand, five hundred twenty-eight".