127617220707872 has 96 divisors (see below), whose sum is σ = 290353034087424. Its totient is φ = 54083799993600.

The previous prime is 127617220707841. The next prime is 127617220707881. The reversal of 127617220707872 is 278707022716721.

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, 620597 + ... + 15988107.

It is an arithmetic number, because the mean of its divisors is an integer number (3024510771744).

Almost surely, 2^{127617220707872} is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 127617220707872, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (145176517043712).

127617220707872 is an abundant number, since it is smaller than the sum of its proper divisors (162735813379552).

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

127617220707872 is a wasteful number, since it uses less digits than its factorization.

127617220707872 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15367942 (or 15367934 counting only the distinct ones).

The product of its (nonzero) digits is 12907776, while the sum is 59.

The spelling of 127617220707872 in words is "one hundred twenty-seven trillion, six hundred seventeen billion, two hundred twenty million, seven hundred seven thousand, eight hundred seventy-two".