138786430252 has 12 divisors (see below), whose sum is σ = 243165741840. Its totient is φ = 69310504016.

The previous prime is 138786430231. The next prime is 138786430309. The reversal of 138786430252 is 252034687831.

It is a junction number, because it is equal to n+sod(n) for n = 138786430196 and 138786430205.

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, 20674003 + ... + 20680714.

It is an arithmetic number, because the mean of its divisors is an integer number (20263811820).

Almost surely, 2^138786430252 is an apocalyptic number.

It is an amenable number.

138786430252 is a deficient number, since it is larger than the sum of its proper divisors (104379311588).

138786430252 is a wasteful number, since it uses less digits than its factorization.

138786430252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 41355560 (or 41355558 counting only the distinct ones).

The product of its (nonzero) digits is 1935360, while the sum is 49.

The spelling of 138786430252 in words is "one hundred thirty-eight billion, seven hundred eighty-six million, four hundred thirty thousand, two hundred fifty-two".