6577779331128 has 16 divisors (see below), whose sum is σ = 16444448327880. Its totient is φ = 2192593110368.

The previous prime is 6577779331087. The next prime is 6577779331177. The reversal of 6577779331128 is 8211339777756.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 137037069375 + ... + 137037069422.

Almost surely, 2^{6577779331128} is an apocalyptic number.

It is an amenable number.

6577779331128 is an abundant number, since it is smaller than the sum of its proper divisors (9866668996752).

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

6577779331128 is a wasteful number, since it uses less digits than its factorization.

6577779331128 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274074138806 (or 274074138802 counting only the distinct ones).

The product of its digits is 93350880, while the sum is 66.

The spelling of 6577779331128 in words is "six trillion, five hundred seventy-seven billion, seven hundred seventy-nine million, three hundred thirty-one thousand, one hundred twenty-eight".