5264643645 has 24 divisors (see below), whose sum is σ = 9127145976. Its totient is φ = 2807267328.

The previous prime is 5264643641. The next prime is 5264643653. The reversal of 5264643645 is 5463464625.

It is a happy number.

5264643645 is a `hidden beast` number, since 526 + 4 + 64 + 3 + 64 + 5 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 69405561 + 5195238084 = 8331^2 + 72078^2 .

It is not a de Polignac number, because 5264643645 - 2² = 5264643641 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 5264643645.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5264643641) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 353469 + ... + 368061.

It is an arithmetic number, because the mean of its divisors is an integer number (380297749).

Almost surely, 2^5264643645 is an apocalyptic number.

It is an amenable number.

5264643645 is a deficient number, since it is larger than the sum of its proper divisors (3862502331).

5264643645 is a wasteful number, since it uses less digits than its factorization.

5264643645 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22621 (or 22618 counting only the distinct ones).

The product of its digits is 2073600, while the sum is 45.

The square root of 5264643645 is about 72557.8641154768. The cubic root of 5264643645 is about 1739.6277493409.

The spelling of 5264643645 in words is "five billion, two hundred sixty-four million, six hundred forty-three thousand, six hundred forty-five".