138693175356 has 48 divisors (see below), whose sum is σ = 327764384640. Its totient is φ = 45641275200.

The previous prime is 138693175321. The next prime is 138693175367. The reversal of 138693175356 is 653571396831.

It is a super-4 number, since 4×138693175356⁴ (a number of 46 digits) contains 4444 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 138693175296 and 138693175305.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 255675 + ... + 585453.

It is an arithmetic number, because the mean of its divisors is an integer number (6828424680).

Almost surely, 2^138693175356 is an apocalyptic number.

It is an amenable number.

138693175356 is an abundant number, since it is smaller than the sum of its proper divisors (189071209284).

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

138693175356 is a wasteful number, since it uses less digits than its factorization.

138693175356 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 330234 (or 330232 counting only the distinct ones).

The product of its digits is 12247200, while the sum is 57.

The spelling of 138693175356 in words is "one hundred thirty-eight billion, six hundred ninety-three million, one hundred seventy-five thousand, three hundred fifty-six".