776828081264 has 40 divisors (see below), whose sum is σ = 1624700432160. Its totient is φ = 358715211008.

The previous prime is 776828081221. The next prime is 776828081299. The reversal of 776828081264 is 462180828677.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36384947 + ... + 36406290.

It is an arithmetic number, because the mean of its divisors is an integer number (40617510804).

Almost surely, 2^776828081264 is an apocalyptic number.

It is an amenable number.

776828081264 is an abundant number, since it is smaller than the sum of its proper divisors (847872350896).

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

776828081264 is a wasteful number, since it uses less digits than its factorization.

776828081264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72791297 (or 72791291 counting only the distinct ones).

The product of its (nonzero) digits is 14450688, while the sum is 59.

The spelling of 776828081264 in words is "seven hundred seventy-six billion, eight hundred twenty-eight million, eighty-one thousand, two hundred sixty-four".