5644356863 has 2 divisors, whose sum is σ = 5644356864. Its totient is φ = 5644356862.

The previous prime is 5644356833. The next prime is 5644356869. The reversal of 5644356863 is 3686534465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5644356863 - 2²⁴ = 5627579647 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5644356869) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2822178431 + 2822178432.

It is an arithmetic number, because the mean of its divisors is an integer number (2822178432).

Almost surely, 2^5644356863 is an apocalyptic number.

5644356863 is a deficient number, since it is larger than the sum of its proper divisors (1).

5644356863 is an equidigital number, since it uses as much as digits as its factorization.

5644356863 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6220800, while the sum is 50.

The square root of 5644356863 is about 75128.9349252337. The cubic root of 5644356863 is about 1780.4843254510.

The spelling of 5644356863 in words is "five billion, six hundred forty-four million, three hundred fifty-six thousand, eight hundred sixty-three".