138782969676 has 432 divisors, whose sum is σ = 413156671200. Its totient is φ = 40733207424.

The previous prime is 138782969651. The next prime is 138782969681. The reversal of 138782969676 is 676969287831.

138782969676 is a `hidden beast` number, since 1 + 387 + 8 + 2 + 96 + 96 + 76 = 666.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1672083931 + ... + 1672084013.

Almost surely, 2^138782969676 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 138782969676, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (206578335600).

138782969676 is an abundant number, since it is smaller than the sum of its proper divisors (274373701524).

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

138782969676 is an frugal number, since it uses more digits than its factorization.

138782969676 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179 (or 130 counting only the distinct ones).

The product of its digits is 329204736, while the sum is 72.

The spelling of 138782969676 in words is "one hundred thirty-eight billion, seven hundred eighty-two million, nine hundred sixty-nine thousand, six hundred seventy-six".