138992113369 has 16 divisors (see below), whose sum is σ = 142687036800. Its totient is φ = 135356158080.

The previous prime is 138992113361. The next prime is 138992113397. The reversal of 138992113369 is 963311299831.

It is a cyclic number.

It is not a de Polignac number, because 138992113369 - 2³ = 138992113361 is a prime.

It is a super-2 number, since 2×138992113369² (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 (138992113361) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1866519 + ... + 1939555.

It is an arithmetic number, because the mean of its divisors is an integer number (8917939800).

Almost surely, 2^138992113369 is an apocalyptic number.

It is an amenable number.

138992113369 is a deficient number, since it is larger than the sum of its proper divisors (3694923431).

138992113369 is a wasteful number, since it uses less digits than its factorization.

138992113369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73440.

The product of its digits is 1889568, while the sum is 55.

The spelling of 138992113369 in words is "one hundred thirty-eight billion, nine hundred ninety-two million, one hundred thirteen thousand, three hundred sixty-nine".