127990983720 has 64 divisors (see below), whose sum is σ = 385566287040. Its totient is φ = 33989299200.

The previous prime is 127990983719. The next prime is 127990983727. The reversal of 127990983720 is 27389099721.

It is a super-2 number, since 2×127990983720² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (127990983727) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2183926 + ... + 2241765.

It is an arithmetic number, because the mean of its divisors is an integer number (6024473235).

Almost surely, 2^127990983720 is an apocalyptic number.

127990983720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127990983720 is an abundant number, since it is smaller than the sum of its proper divisors (257575303320).

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

127990983720 is a wasteful number, since it uses less digits than its factorization.

127990983720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4425946 (or 4425942 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 57.

The spelling of 127990983720 in words is "one hundred twenty-seven billion, nine hundred ninety million, nine hundred eighty-three thousand, seven hundred twenty".