138785207876 has 12 divisors (see below), whose sum is σ = 277570415808. Its totient is φ = 59479374792.

The previous prime is 138785207851. The next prime is 138785207893. The reversal of 138785207876 is 678702587831.

138785207876 is an admirable number.

It is a super-2 number, since 2×138785207876² (a number of 23 digits) contains 22 as substring.

It is a hoax number, since the sum of its digits (62) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2478307256 + ... + 2478307311.

It is an arithmetic number, because the mean of its divisors is an integer number (23130867984).

Almost surely, 2^138785207876 is an apocalyptic number.

It is an amenable number.

138785207876 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

138785207876 is a wasteful number, since it uses less digits than its factorization.

138785207876 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4956614578 (or 4956614576 counting only the distinct ones).

The product of its (nonzero) digits is 31610880, while the sum is 62.

The spelling of 138785207876 in words is "one hundred thirty-eight billion, seven hundred eighty-five million, two hundred seven thousand, eight hundred seventy-six".