127840938440 has 64 divisors (see below), whose sum is σ = 303826152960. Its totient is φ = 48335938560.

The previous prime is 127840938431. The next prime is 127840938461. The reversal of 127840938440 is 44839048721.

It is a happy 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, 1145489 + ... + 1252128.

It is an arithmetic number, because the mean of its divisors is an integer number (4747283640).

Almost surely, 2^127840938440 is an apocalyptic number.

127840938440 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127840938440 is an abundant number, since it is smaller than the sum of its proper divisors (175985214520).

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

127840938440 is a wasteful number, since it uses less digits than its factorization.

127840938440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2397702 (or 2397698 counting only the distinct ones).

The product of its (nonzero) digits is 1548288, while the sum is 50.

The spelling of 127840938440 in words is "one hundred twenty-seven billion, eight hundred forty million, nine hundred thirty-eight thousand, four hundred forty".