138696206867 has 16 divisors (see below), whose sum is σ = 143906513280. Its totient is φ = 133515043200.

The previous prime is 138696206843. The next prime is 138696206881. The reversal of 138696206867 is 768602696831.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-138696206867 is a prime.

It is a Smith number, since the sum of its digits (62) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138696206827) 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, 14045942 + ... + 14055812.

It is an arithmetic number, because the mean of its divisors is an integer number (8994157080).

Almost surely, 2^138696206867 is an apocalyptic number.

138696206867 is a deficient number, since it is larger than the sum of its proper divisors (5210306413).

138696206867 is an equidigital number, since it uses as much as digits as its factorization.

138696206867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11294.

The product of its (nonzero) digits is 31352832, while the sum is 62.

The spelling of 138696206867 in words is "one hundred thirty-eight billion, six hundred ninety-six million, two hundred six thousand, eight hundred sixty-seven".