5645818648 has 32 divisors (see below), whose sum is σ = 11054361600. Its totient is φ = 2698171168.

The previous prime is 5645818621. The next prime is 5645818649. The reversal of 5645818648 is 8468185465.

It is a super-2 number, since 2×5645818648² = 63750536412209095808, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5645818649) 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, 254115 + ... + 275437.

It is an arithmetic number, because the mean of its divisors is an integer number (345448800).

Almost surely, 2^5645818648 is an apocalyptic number.

It is an amenable number.

5645818648 is a deficient number, since it is larger than the sum of its proper divisors (5408542952).

5645818648 is a wasteful number, since it uses less digits than its factorization.

5645818648 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22791 (or 22787 counting only the distinct ones).

The product of its digits is 7372800, while the sum is 55.

The square root of 5645818648 is about 75138.6628041782. The cubic root of 5645818648 is about 1780.6380164555.

The spelling of 5645818648 in words is "five billion, six hundred forty-five million, eight hundred eighteen thousand, six hundred forty-eight".