127557996720 has 480 divisors, whose sum is σ = 508325131776. Its totient is φ = 25887375360.

The previous prime is 127557996667. The next prime is 127557996737. The reversal of 127557996720 is 27699755721.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 8733744 + ... + 8748336.

Almost surely, 2^127557996720 is an apocalyptic number.

127557996720 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 127557996720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (254162565888).

127557996720 is an abundant number, since it is smaller than the sum of its proper divisors (380767135056).

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

127557996720 is a wasteful number, since it uses less digits than its factorization.

127557996720 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14681 (or 14664 counting only the distinct ones).

The product of its (nonzero) digits is 16669800, while the sum is 60.

The spelling of 127557996720 in words is "one hundred twenty-seven billion, five hundred fifty-seven million, nine hundred ninety-six thousand, seven hundred twenty".