138888847206 has 48 divisors (see below), whose sum is σ = 312184336464. Its totient is φ = 46279504224.

The previous prime is 138888847177. The next prime is 138888847231. The reversal of 138888847206 is 602748888831.

138888847206 is a `hidden beast` number, since 1 + 3 + 8 + 88 + 88 + 472 + 0 + 6 = 666.

It is a super-2 number, since 2×138888847206² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1328416 + ... + 1429148.

It is an arithmetic number, because the mean of its divisors is an integer number (6503840343).

Almost surely, 2^138888847206 is an apocalyptic number.

138888847206 is an abundant number, since it is smaller than the sum of its proper divisors (173295489258).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

138888847206 is a wasteful number, since it uses less digits than its factorization.

138888847206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 103587 (or 103575 counting only the distinct ones).

The product of its (nonzero) digits is 33030144, while the sum is 63.

The spelling of 138888847206 in words is "one hundred thirty-eight billion, eight hundred eighty-eight million, eight hundred forty-seven thousand, two hundred six".