138889966358 has 16 divisors (see below), whose sum is σ = 244757144016. Its totient is φ = 58275510240.

The previous prime is 138889966337. The next prime is 138889966373. The reversal of 138889966358 is 853669988831.

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, 242814341 + ... + 242814912.

It is an arithmetic number, because the mean of its divisors is an integer number (15297321501).

Almost surely, 2^138889966358 is an apocalyptic number.

138889966358 is a deficient number, since it is larger than the sum of its proper divisors (105867177658).

138889966358 is a wasteful number, since it uses less digits than its factorization.

138889966358 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 485629279.

The product of its digits is 537477120, while the sum is 74.

The spelling of 138889966358 in words is "one hundred thirty-eight billion, eight hundred eighty-nine million, nine hundred sixty-six thousand, three hundred fifty-eight".