138781806676424 has 16 divisors (see below), whose sum is σ = 260216591763120. Its totient is φ = 69390715539600.

The previous prime is 138781806676379. The next prime is 138781806676481. The reversal of 138781806676424 is 424676608187831.

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, 20308994 + ... + 26268209.

It is an arithmetic number, because the mean of its divisors is an integer number (16263536985195).

Almost surely, 2^{138781806676424} is an apocalyptic number.

It is an amenable number.

138781806676424 is a deficient number, since it is larger than the sum of its proper divisors (121434785086696).

138781806676424 is a wasteful number, since it uses less digits than its factorization.

138781806676424 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46949660 (or 46949656 counting only the distinct ones).

The product of its (nonzero) digits is 520224768, while the sum is 71.

The spelling of 138781806676424 in words is "one hundred thirty-eight trillion, seven hundred eighty-one billion, eight hundred six million, six hundred seventy-six thousand, four hundred twenty-four".