138079066529 has 6 divisors (see below), whose sum is σ = 145728876690. Its totient is φ = 130811746896.

The previous prime is 138079066519. The next prime is 138079066589. The reversal of 138079066529 is 925660970831.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 130046784400 + 8032282129 = 360620^2 + 89623^2 .

It is not a de Polignac number, because 138079066529 - 2²⁰ = 138078017953 is a prime.

It is a super-2 number, since 2×138079066529² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138079066519) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 191244884 + ... + 191245605.

It is an arithmetic number, because the mean of its divisors is an integer number (24288146115).

Almost surely, 2^138079066529 is an apocalyptic number.

138079066529 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

138079066529 is a deficient number, since it is larger than the sum of its proper divisors (7649810161).

138079066529 is an equidigital number, since it uses as much as digits as its factorization.

138079066529 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382490527 (or 382490508 counting only the distinct ones).

The product of its (nonzero) digits is 4898880, while the sum is 56.

The spelling of 138079066529 in words is "one hundred thirty-eight billion, seventy-nine million, sixty-six thousand, five hundred twenty-nine".