5644643363 has 2 divisors, whose sum is σ = 5644643364. Its totient is φ = 5644643362.

The previous prime is 5644643309. The next prime is 5644643377. The reversal of 5644643363 is 3633464465.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5644643363 - 2⁸ = 5644643107 is a prime.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (5644646363) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2822321681 + 2822321682.

It is an arithmetic number, because the mean of its divisors is an integer number (2822321682).

Almost surely, 2^5644643363 is an apocalyptic number.

5644643363 is a deficient number, since it is larger than the sum of its proper divisors (1).

5644643363 is an equidigital number, since it uses as much as digits as its factorization.

5644643363 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1866240, while the sum is 44.

The square root of 5644643363 is about 75130.8416231310. The cubic root of 5644643363 is about 1780.5144499417.

The spelling of 5644643363 in words is "five billion, six hundred forty-four million, six hundred forty-three thousand, three hundred sixty-three".