2645921056 has 24 divisors (see below), whose sum is σ = 5243664384. Its totient is φ = 1314196800.

The previous prime is 2645921039. The next prime is 2645921077. The reversal of 2645921056 is 6501295462.

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, 268960 + ... + 278623.

It is an arithmetic number, because the mean of its divisors is an integer number (218486016).

Almost surely, 2^2645921056 is an apocalyptic number.

It is an amenable number.

2645921056 is a deficient number, since it is larger than the sum of its proper divisors (2597743328).

2645921056 is a wasteful number, since it uses less digits than its factorization.

2645921056 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547744 (or 547736 counting only the distinct ones).

The product of its (nonzero) digits is 129600, while the sum is 40.

The square root of 2645921056 is about 51438.5172414602. The cubic root of 2645921056 is about 1383.1171321413.

The spelling of 2645921056 in words is "two billion, six hundred forty-five million, nine hundred twenty-one thousand, fifty-six".