138356573706 has 48 divisors (see below), whose sum is σ = 323076009984. Its totient is φ = 42539077152.

The previous prime is 138356573699. The next prime is 138356573717. The reversal of 138356573706 is 607375653831.

138356573706 is a `hidden beast` number, since 1 + 3 + 8 + 3 + 565 + 7 + 3 + 70 + 6 = 666.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 87735 + ... + 533301.

It is an arithmetic number, because the mean of its divisors is an integer number (6730750208).

Almost surely, 2^138356573706 is an apocalyptic number.

138356573706 is an abundant number, since it is smaller than the sum of its proper divisors (184719436278).

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

138356573706 is a wasteful number, since it uses less digits than its factorization.

138356573706 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446915 (or 446912 counting only the distinct ones).

The product of its (nonzero) digits is 9525600, while the sum is 54.

The spelling of 138356573706 in words is "one hundred thirty-eight billion, three hundred fifty-six million, five hundred seventy-three thousand, seven hundred six".