127120721023280 has 80 divisors (see below), whose sum is σ = 300570030858240. Its totient is φ = 49985632079616.

The previous prime is 127120721023253. The next prime is 127120721023297. The reversal of 127120721023280 is 82320127021721.

It is a tau number, because it is divible by the number of its divisors (80).

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, 343936337 + ... + 344305743.

It is an arithmetic number, because the mean of its divisors is an integer number (3757125385728).

Almost surely, 2^{127120721023280} is an apocalyptic number.

127120721023280 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127120721023280 is an abundant number, since it is smaller than the sum of its proper divisors (173449309834960).

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

127120721023280 is a wasteful number, since it uses less digits than its factorization.

127120721023280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 442386 (or 442380 counting only the distinct ones).

The product of its (nonzero) digits is 37632, while the sum is 38.

The spelling of 127120721023280 in words is "one hundred twenty-seven trillion, one hundred twenty billion, seven hundred twenty-one million, twenty-three thousand, two hundred eighty".