138079066530 has 32 divisors (see below), whose sum is σ = 336335880384. Its totient is φ = 36271515456.

The previous prime is 138079066519. The next prime is 138079066589. The reversal of 138079066530 is 35660970831.

It is a happy number.

It is a super-2 number, since 2×138079066530² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 138079066530.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34346017 + ... + 34350036.

It is an arithmetic number, because the mean of its divisors is an integer number (10510496262).

Almost surely, 2^138079066530 is an apocalyptic number.

138079066530 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

138079066530 is an abundant number, since it is smaller than the sum of its proper divisors (198256813854).

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

138079066530 is a wasteful number, since it uses less digits than its factorization.

138079066530 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68696130.

The product of its (nonzero) digits is 816480, while the sum is 48.

The spelling of 138079066530 in words is "one hundred thirty-eight billion, seventy-nine million, sixty-six thousand, five hundred thirty".