7764275856 has 20 divisors (see below), whose sum is σ = 20057712752. Its totient is φ = 2588091936.

The previous prime is 7764275803. The next prime is 7764275891. The reversal of 7764275856 is 6585724677.

It is a junction number, because it is equal to n+sod(n) for n = 7764275796 and 7764275805.

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, 80877826 + ... + 80877921.

Almost surely, 2^7764275856 is an apocalyptic number.

It is an amenable number.

7764275856 is an abundant number, since it is smaller than the sum of its proper divisors (12293436896).

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

7764275856 is a wasteful number, since it uses less digits than its factorization.

7764275856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 161755758 (or 161755752 counting only the distinct ones).

The product of its digits is 19756800, while the sum is 57.

The square root of 7764275856 is about 88115.1284173155. The cubic root of 7764275856 is about 1980.1601625364.

The spelling of 7764275856 in words is "seven billion, seven hundred sixty-four million, two hundred seventy-five thousand, eight hundred fifty-six".