5644356853 has 4 divisors (see below), whose sum is σ = 5764449600. Its totient is φ = 5524264108.

The previous prime is 5644356833. The next prime is 5644356863. The reversal of 5644356853 is 3586534465.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5644356853 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 5644356797 and 5644356806.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5644356803) 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, 60046303 + ... + 60046396.

It is an arithmetic number, because the mean of its divisors is an integer number (1441112400).

Almost surely, 2^5644356853 is an apocalyptic number.

It is an amenable number.

5644356853 is a deficient number, since it is larger than the sum of its proper divisors (120092747).

5644356853 is a wasteful number, since it uses less digits than its factorization.

5644356853 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 120092746.

The product of its digits is 5184000, while the sum is 49.

The square root of 5644356853 is about 75128.9348586814. The cubic root of 5644356853 is about 1780.4843243995.

The spelling of 5644356853 in words is "five billion, six hundred forty-four million, three hundred fifty-six thousand, eight hundred fifty-three".