138118459867 has 16 divisors (see below), whose sum is σ = 146560173120. Its totient is φ = 129881980800.

The previous prime is 138118459849. The next prime is 138118459889. The reversal of 138118459867 is 768954811831.

It is a de Polignac number, because none of the positive numbers 2^k-138118459867 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (61).

It is not an unprimeable number, because it can be changed into a prime (138118459847) 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, 2879017 + ... + 2926597.

It is an arithmetic number, because the mean of its divisors is an integer number (9160010820).

Almost surely, 2^138118459867 is an apocalyptic number.

138118459867 is a deficient number, since it is larger than the sum of its proper divisors (8441713253).

138118459867 is a wasteful number, since it uses less digits than its factorization.

138118459867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49734.

The product of its digits is 11612160, while the sum is 61.

The spelling of 138118459867 in words is "one hundred thirty-eight billion, one hundred eighteen million, four hundred fifty-nine thousand, eight hundred sixty-seven".