138088380440 has 16 divisors (see below), whose sum is σ = 310698856080. Its totient is φ = 55235352160.

The previous prime is 138088380433. The next prime is 138088380491. The reversal of 138088380440 is 44083880831.

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, 1726104716 + ... + 1726104795.

It is an arithmetic number, because the mean of its divisors is an integer number (19418678505).

Almost surely, 2^138088380440 is an apocalyptic number.

138088380440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

138088380440 is an abundant number, since it is smaller than the sum of its proper divisors (172610475640).

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

138088380440 is a wasteful number, since it uses less digits than its factorization.

138088380440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3452209522 (or 3452209518 counting only the distinct ones).

The product of its (nonzero) digits is 589824, while the sum is 47.

The spelling of 138088380440 in words is "one hundred thirty-eight billion, eighty-eight million, three hundred eighty thousand, four hundred forty".