138751263760 has 20 divisors (see below), whose sum is σ = 322596688428. Its totient is φ = 55500505472.

The previous prime is 138751263719. The next prime is 138751263793. The reversal of 138751263760 is 67362157831.

It can be written as a sum of positive squares in 2 ways, for example, as 72675533056 + 66075730704 = 269584^2 + 257052^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 867195319 + ... + 867195478.

Almost surely, 2^138751263760 is an apocalyptic number.

138751263760 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138751263760 is an abundant number, since it is smaller than the sum of its proper divisors (183845424668).

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

138751263760 is a wasteful number, since it uses less digits than its factorization.

138751263760 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1734390810 (or 1734390804 counting only the distinct ones).

The product of its (nonzero) digits is 1270080, while the sum is 49.

The spelling of 138751263760 in words is "one hundred thirty-eight billion, seven hundred fifty-one million, two hundred sixty-three thousand, seven hundred sixty".