138352170612 has 12 divisors (see below), whose sum is σ = 322821731456. Its totient is φ = 46117390200.

The previous prime is 138352170563. The next prime is 138352170613. The reversal of 138352170612 is 216071253831.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a super-2 number, since 2×138352170612² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (138352170613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5764673764 + ... + 5764673787.

Almost surely, 2^138352170612 is an apocalyptic number.

138352170612 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

138352170612 is an abundant number, since it is smaller than the sum of its proper divisors (184469560844).

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

138352170612 is a wasteful number, since it uses less digits than its factorization.

138352170612 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11529347558 (or 11529347556 counting only the distinct ones).

The product of its (nonzero) digits is 60480, while the sum is 39.

The spelling of 138352170612 in words is "one hundred thirty-eight billion, three hundred fifty-two million, one hundred seventy thousand, six hundred twelve".