776664554041056 has 24 divisors (see below), whose sum is σ = 2038744454358024. Its totient is φ = 258888184680320.

The previous prime is 776664554041007. The next prime is 776664554041063. The reversal of 776664554041056 is 650140455466677.

It is a tau number, because it is divible by the number of its divisors (24).

It is a Smith number, since the sum of its digits (66) coincides with the sum of the digits of its prime factors.

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, 4045127885535 + ... + 4045127885726.

It is an arithmetic number, because the mean of its divisors is an integer number (84947685598251).

Almost surely, 2^{776664554041056} is an apocalyptic number.

It is an amenable number.

776664554041056 is an abundant number, since it is smaller than the sum of its proper divisors (1262079900316968).

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

776664554041056 is a wasteful number, since it uses less digits than its factorization.

776664554041056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8090255771274 (or 8090255771266 counting only the distinct ones).

The product of its (nonzero) digits is 508032000, while the sum is 66.

The spelling of 776664554041056 in words is "seven hundred seventy-six trillion, six hundred sixty-four billion, five hundred fifty-four million, forty-one thousand, fifty-six".