138476990852 has 6 divisors (see below), whose sum is σ = 242334733998. Its totient is φ = 69238495424.

The previous prime is 138476990849. The next prime is 138476990921. The reversal of 138476990852 is 258099674831.

It can be written as a sum of positive squares in only one way, i.e., 138282834496 + 194156356 = 371864^2 + 13934^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17309623853 + ... + 17309623860.

It is an arithmetic number, because the mean of its divisors is an integer number (40389122333).

It is a 2-persistent number, because it is pandigital, and so is 2⋅138476990852 = 276953981704, but 3⋅138476990852 = 415430972556 is not.

Almost surely, 2^138476990852 is an apocalyptic number.

It is an amenable number.

138476990852 is a deficient number, since it is larger than the sum of its proper divisors (103857743146).

138476990852 is a wasteful number, since it uses less digits than its factorization.

138476990852 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34619247717 (or 34619247715 counting only the distinct ones).

The product of its (nonzero) digits is 26127360, while the sum is 62.

The spelling of 138476990852 in words is "one hundred thirty-eight billion, four hundred seventy-six million, nine hundred ninety thousand, eight hundred fifty-two".