138017650319 has 2 divisors, whose sum is σ = 138017650320. Its totient is φ = 138017650318.

The previous prime is 138017650279. The next prime is 138017650333. The reversal of 138017650319 is 913056710831.

It is a strong prime.

It is an emirp because it is prime and its reverse (913056710831) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138017650319 is a prime.

It is a super-2 number, since 2×138017650319² (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 138017650319.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138017650369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69008825159 + 69008825160.

It is an arithmetic number, because the mean of its divisors is an integer number (69008825160).

Almost surely, 2^138017650319 is an apocalyptic number.

138017650319 is a deficient number, since it is larger than the sum of its proper divisors (1).

138017650319 is an equidigital number, since it uses as much as digits as its factorization.

138017650319 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 136080, while the sum is 44.

The spelling of 138017650319 in words is "one hundred thirty-eight billion, seventeen million, six hundred fifty thousand, three hundred nineteen".