138079066519 has 2 divisors, whose sum is σ = 138079066520. Its totient is φ = 138079066518.

The previous prime is 138079066511. The next prime is 138079066589. The reversal of 138079066519 is 915660970831.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138079066519 - 2³ = 138079066511 is a prime.

It is a super-2 number, since 2×138079066519² (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 138079066519.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138079066511) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69039533259 + 69039533260.

It is an arithmetic number, because the mean of its divisors is an integer number (69039533260).

Almost surely, 2^138079066519 is an apocalyptic number.

138079066519 is a deficient number, since it is larger than the sum of its proper divisors (1).

138079066519 is an equidigital number, since it uses as much as digits as its factorization.

138079066519 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2449440, while the sum is 55.

The spelling of 138079066519 in words is "one hundred thirty-eight billion, seventy-nine million, sixty-six thousand, five hundred nineteen".