138734213399 has 2 divisors, whose sum is σ = 138734213400. Its totient is φ = 138734213398.

The previous prime is 138734213393. The next prime is 138734213447. The reversal of 138734213399 is 993312437831.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 138734213399 - 2¹⁶ = 138734147863 is a prime.

It is a super-2 number, since 2×138734213399² (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 138734213399.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (138734213393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 69367106699 + 69367106700.

It is an arithmetic number, because the mean of its divisors is an integer number (69367106700).

Almost surely, 2^138734213399 is an apocalyptic number.

138734213399 is a deficient number, since it is larger than the sum of its proper divisors (1).

138734213399 is an equidigital number, since it uses as much as digits as its factorization.

138734213399 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2939328, while the sum is 53.

The spelling of 138734213399 in words is "one hundred thirty-eight billion, seven hundred thirty-four million, two hundred thirteen thousand, three hundred ninety-nine".