5645534263 has 4 divisors (see below), whose sum is σ = 5653705048. Its totient is φ = 5637363480.

The previous prime is 5645534249. The next prime is 5645534273. The reversal of 5645534263 is 3624355465.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5645534263 is a prime.

It is a super-2 number, since 2×5645534263² = 63744114229413906338, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5645534243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4084356 + ... + 4085737.

It is an arithmetic number, because the mean of its divisors is an integer number (1413426262).

Almost surely, 2^5645534263 is an apocalyptic number.

5645534263 is a deficient number, since it is larger than the sum of its proper divisors (8170785).

5645534263 is an equidigital number, since it uses as much as digits as its factorization.

5645534263 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8170784.

The product of its digits is 1296000, while the sum is 43.

The square root of 5645534263 is about 75136.7703790894. The cubic root of 5645534263 is about 1780.6081185035.

The spelling of 5645534263 in words is "five billion, six hundred forty-five million, five hundred thirty-four thousand, two hundred sixty-three".