138659414828 has 24 divisors (see below), whose sum is σ = 273841480080. Its totient is φ = 60853661120.

The previous prime is 138659414801. The next prime is 138659414851. The reversal of 138659414828 is 828414956831.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 54332351 + ... + 54334902.

It is an arithmetic number, because the mean of its divisors is an integer number (11410061670).

Almost surely, 2^138659414828 is an apocalyptic number.

It is an amenable number.

138659414828 is a deficient number, since it is larger than the sum of its proper divisors (135182065252).

138659414828 is a wasteful number, since it uses less digits than its factorization.

138659414828 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 108667297 (or 108667295 counting only the distinct ones).

The product of its digits is 13271040, while the sum is 59.

The spelling of 138659414828 in words is "one hundred thirty-eight billion, six hundred fifty-nine million, four hundred fourteen thousand, eight hundred twenty-eight".