138867858707 has 8 divisors (see below), whose sum is σ = 147253756896. Its totient is φ = 130506093952.

The previous prime is 138867858667. The next prime is 138867858709. The reversal of 138867858707 is 707858768831.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 138867858707 - 2¹⁶ = 138867793171 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (138867858709) 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 in 7 ways as a sum of consecutive naturals, for example, 6021503 + ... + 6044520.

It is an arithmetic number, because the mean of its divisors is an integer number (18406719612).

Almost surely, 2^138867858707 is an apocalyptic number.

138867858707 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

138867858707 is a deficient number, since it is larger than the sum of its proper divisors (8385898189).

138867858707 is a wasteful number, since it uses less digits than its factorization.

138867858707 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12066717.

The product of its (nonzero) digits is 126443520, while the sum is 68.

The spelling of 138867858707 in words is "one hundred thirty-eight billion, eight hundred sixty-seven million, eight hundred fifty-eight thousand, seven hundred seven".