5031645643 has 4 divisors (see below), whose sum is σ = 5095337440. Its totient is φ = 4967953848.

The previous prime is 5031645629. The next prime is 5031645649. The reversal of 5031645643 is 3465461305.

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

It is a cyclic number.

It is not a de Polignac number, because 5031645643 - 2¹³ = 5031637451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5031645649) 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, 31845780 + ... + 31845937.

It is an arithmetic number, because the mean of its divisors is an integer number (1273834360).

Almost surely, 2^5031645643 is an apocalyptic number.

5031645643 is a deficient number, since it is larger than the sum of its proper divisors (63691797).

5031645643 is an equidigital number, since it uses as much as digits as its factorization.

5031645643 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63691796.

The product of its (nonzero) digits is 129600, while the sum is 37.

The square root of 5031645643 is about 70934.0936574226. The cubic root of 5031645643 is about 1713.5759149940.

It can be divided in two parts, 50316 and 45643, that added together give a palindrome (95959).

The spelling of 5031645643 in words is "five billion, thirty-one million, six hundred forty-five thousand, six hundred forty-three".