2573644645 has 32 divisors (see below), whose sum is σ = 3745373184. Its totient is φ = 1672012800.

The previous prime is 2573644627. The next prime is 2573644651. The reversal of 2573644645 is 5464463752.

It is not a de Polignac number, because 2573644645 - 2⁵ = 2573644613 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2573644595 and 2573644604.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 35892 + ... + 80221.

It is an arithmetic number, because the mean of its divisors is an integer number (117042912).

Almost surely, 2^2573644645 is an apocalyptic number.

It is an amenable number.

2573644645 is a deficient number, since it is larger than the sum of its proper divisors (1171728539).

2573644645 is a wasteful number, since it uses less digits than its factorization.

2573644645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 116173.

The product of its digits is 2419200, while the sum is 46.

The square root of 2573644645 is about 50731.1013580427. The cubic root of 2573644645 is about 1370.4068702913.

The spelling of 2573644645 in words is "two billion, five hundred seventy-three million, six hundred forty-four thousand, six hundred forty-five".