780128404216584 has 16 divisors (see below), whose sum is σ = 1950321010541520. Its totient is φ = 260042801405520.

The previous prime is 780128404216559. The next prime is 780128404216591. The reversal of 780128404216584 is 485612404821087.

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, 16252675087822 + ... + 16252675087869.

It is an arithmetic number, because the mean of its divisors is an integer number (121895063158845).

Almost surely, 2^{780128404216584} is an apocalyptic number.

It is an amenable number.

780128404216584 is an abundant number, since it is smaller than the sum of its proper divisors (1170192606324936).

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

780128404216584 is a wasteful number, since it uses less digits than its factorization.

780128404216584 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 32505350175700 (or 32505350175696 counting only the distinct ones).

The product of its (nonzero) digits is 27525120, while the sum is 60.

The spelling of 780128404216584 in words is "seven hundred eighty trillion, one hundred twenty-eight billion, four hundred four million, two hundred sixteen thousand, five hundred eighty-four".