5645776243 has 2 divisors, whose sum is σ = 5645776244. Its totient is φ = 5645776242.

The previous prime is 5645776229. The next prime is 5645776267. The reversal of 5645776243 is 3426775465.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5645776243 is a prime.

It is not a weakly prime, because it can be changed into another prime (5645776343) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2822888121 + 2822888122.

It is an arithmetic number, because the mean of its divisors is an integer number (2822888122).

Almost surely, 2^5645776243 is an apocalyptic number.

5645776243 is a deficient number, since it is larger than the sum of its proper divisors (1).

5645776243 is an equidigital number, since it uses as much as digits as its factorization.

5645776243 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4233600, while the sum is 49.

The square root of 5645776243 is about 75138.3806253502. The cubic root of 5645776243 is about 1780.6335583985.

The spelling of 5645776243 in words is "five billion, six hundred forty-five million, seven hundred seventy-six thousand, two hundred forty-three".