6776564773648 has 40 divisors (see below), whose sum is σ = 13293531804600. Its totient is φ = 3346070052864.

The previous prime is 6776564773637. The next prime is 6776564773651. The reversal of 6776564773648 is 8463774656776.

It can be written as a sum of positive squares in 4 ways, for example, as 2101421338384 + 4675143435264 = 1449628^2 + 2162208^2 .

It is a Smith number, since the sum of its digits (76) coincides with the sum of the digits of its prime factors.

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, 1789161 + ... + 4093192.

It is an arithmetic number, because the mean of its divisors is an integer number (332338295115).

Almost surely, 2^{6776564773648} is an apocalyptic number.

It is an amenable number.

6776564773648 is a deficient number, since it is larger than the sum of its proper divisors (6516967030952).

6776564773648 is a wasteful number, since it uses less digits than its factorization.

6776564773648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5883259 (or 5883253 counting only the distinct ones).

The product of its digits is 5974456320, while the sum is 76.

The spelling of 6776564773648 in words is "six trillion, seven hundred seventy-six billion, five hundred sixty-four million, seven hundred seventy-three thousand, six hundred forty-eight".