2643916816 has 40 divisors (see below), whose sum is σ = 5260600800. Its totient is φ = 1286503680.

The previous prime is 2643916799. The next prime is 2643916817. The reversal of 2643916816 is 6186193462.

It is a super-2 number, since 2×2643916816² = 13980592259855155712, which contains 22 as substring.

It is a hoax number, since the sum of its digits (46) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (2643916817) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 270055 + ... + 279673.

It is an arithmetic number, because the mean of its divisors is an integer number (131515020).

Almost surely, 2^2643916816 is an apocalyptic number.

It is an amenable number.

2643916816 is a deficient number, since it is larger than the sum of its proper divisors (2616683984).

2643916816 is a wasteful number, since it uses less digits than its factorization.

2643916816 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10087 (or 10081 counting only the distinct ones).

The product of its digits is 373248, while the sum is 46.

The square root of 2643916816 is about 51419.0316517143. The cubic root of 2643916816 is about 1382.7678147257.

The spelling of 2643916816 in words is "two billion, six hundred forty-three million, nine hundred sixteen thousand, eight hundred sixteen".