108721137940 has 48 divisors (see below), whose sum is σ = 230043240000. Its totient is φ = 43159387392.

The previous prime is 108721137929. The next prime is 108721138063. The reversal of 108721137940 is 49731127801.

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, 9721632 + ... + 9732808.

It is an arithmetic number, because the mean of its divisors is an integer number (4792567500).

Almost surely, 2^108721137940 is an apocalyptic number.

108721137940 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

108721137940 is an abundant number, since it is smaller than the sum of its proper divisors (121322102060).

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

108721137940 is a wasteful number, since it uses less digits than its factorization.

108721137940 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14824 (or 14822 counting only the distinct ones).

The product of its (nonzero) digits is 84672, while the sum is 43.

The spelling of 108721137940 in words is "one hundred eight billion, seven hundred twenty-one million, one hundred thirty-seven thousand, nine hundred forty".