127776453513728 has 80 divisors (see below), whose sum is σ = 263553484592640. Its totient is φ = 61823902924800.

The previous prime is 127776453513713. The next prime is 127776453513739. The reversal of 127776453513728 is 827315354677721.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 300069608 + ... + 300495128.

It is an arithmetic number, because the mean of its divisors is an integer number (3294418557408).

Almost surely, 2^{127776453513728} 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 127776453513728, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (131776742296320).

127776453513728 is an abundant number, since it is smaller than the sum of its proper divisors (135777031078912).

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

127776453513728 is an equidigital number, since it uses as much as digits as its factorization.

127776453513728 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444489 (or 444473 counting only the distinct ones).

The product of its digits is 414892800, while the sum is 68.

The spelling of 127776453513728 in words is "one hundred twenty-seven trillion, seven hundred seventy-six billion, four hundred fifty-three million, five hundred thirteen thousand, seven hundred twenty-eight".