138751607136 has 24 divisors (see below), whose sum is σ = 364222968984. Its totient is φ = 46250535680.

The previous prime is 138751607129. The next prime is 138751607147. The reversal of 138751607136 is 631706157831.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (24).

It is a super-2 number, since 2×138751607136² (a number of 23 digits) contains 22 as substring.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

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, 722664525 + ... + 722664716.

It is an arithmetic number, because the mean of its divisors is an integer number (15175957041).

Almost surely, 2^138751607136 is an apocalyptic number.

138751607136 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

138751607136 is an abundant number, since it is smaller than the sum of its proper divisors (225471361848).

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

138751607136 is a wasteful number, since it uses less digits than its factorization.

138751607136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1445329254 (or 1445329246 counting only the distinct ones).

The product of its (nonzero) digits is 635040, while the sum is 48.

The spelling of 138751607136 in words is "one hundred thirty-eight billion, seven hundred fifty-one million, six hundred seven thousand, one hundred thirty-six".