127721031338000 has 80 divisors (see below), whose sum is σ = 308921740493184. Its totient is φ = 51073145916800.

The previous prime is 127721031337997. The next prime is 127721031338023. The reversal of 127721031338000 is 833130127721.

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, 2845964 + ... + 16233963.

Almost surely, 2^{127721031338000} is an apocalyptic number.

127721031338000 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

127721031338000 is an abundant number, since it is smaller than the sum of its proper divisors (181200709155184).

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

127721031338000 is a wasteful number, since it uses less digits than its factorization.

127721031338000 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19083297 (or 19083281 counting only the distinct ones).

The product of its (nonzero) digits is 42336, while the sum is 38.

The spelling of 127721031338000 in words is "one hundred twenty-seven trillion, seven hundred twenty-one billion, thirty-one million, three hundred thirty-eight thousand".