138669762868 has 48 divisors (see below), whose sum is σ = 314393000320. Its totient is φ = 51971082624.

The previous prime is 138669762863. The next prime is 138669762883. The reversal of 138669762868 is 868267966831.

It is a junction number, because it is equal to n+sod(n) for n = 138669762797 and 138669762806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138669762863) 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, 10018371 + ... + 10032202.

Almost surely, 2^138669762868 is an apocalyptic number.

It is an amenable number.

138669762868 is an abundant number, since it is smaller than the sum of its proper divisors (175723237452).

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

138669762868 is a wasteful number, since it uses less digits than its factorization.

138669762868 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20050616 (or 20050614 counting only the distinct ones).

The product of its digits is 250822656, while the sum is 70.

The spelling of 138669762868 in words is "one hundred thirty-eight billion, six hundred sixty-nine million, seven hundred sixty-two thousand, eight hundred sixty-eight".