138633368886 has 16 divisors (see below), whose sum is σ = 308074153200. Its totient is φ = 46211122944.

The previous prime is 138633368879. The next prime is 138633368897. The reversal of 138633368886 is 688863336831.

138633368886 is a `hidden beast` number, since 138 + 63 + 3 + 368 + 8 + 86 = 666.

It is a congruent number.

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, 1283642251 + ... + 1283642358.

It is an arithmetic number, because the mean of its divisors is an integer number (19254634575).

Almost surely, 2^138633368886 is an apocalyptic number.

138633368886 is an abundant number, since it is smaller than the sum of its proper divisors (169440784314).

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

138633368886 is a wasteful number, since it uses less digits than its factorization.

138633368886 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2567284620 (or 2567284614 counting only the distinct ones).

The product of its digits is 71663616, while the sum is 63.

The spelling of 138633368886 in words is "one hundred thirty-eight billion, six hundred thirty-three million, three hundred sixty-eight thousand, eight hundred eighty-six".