5643671801 has 2 divisors, whose sum is σ = 5643671802. Its totient is φ = 5643671800.

The previous prime is 5643671791. The next prime is 5643671833. The reversal of 5643671801 is 1081763465.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 5557553401 + 86118400 = 74549^2 + 9280^2 .

It is a cyclic number.

It is not a de Polignac number, because 5643671801 - 2²² = 5639477497 is a prime.

It is not a weakly prime, because it can be changed into another prime (5643671881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2821835900 + 2821835901.

It is an arithmetic number, because the mean of its divisors is an integer number (2821835901).

Almost surely, 2^5643671801 is an apocalyptic number.

It is an amenable number.

5643671801 is a deficient number, since it is larger than the sum of its proper divisors (1).

5643671801 is an equidigital number, since it uses as much as digits as its factorization.

5643671801 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 120960, while the sum is 41.

The square root of 5643671801 is about 75124.3755448257. The cubic root of 5643671801 is about 1780.4122894019.

The spelling of 5643671801 in words is "five billion, six hundred forty-three million, six hundred seventy-one thousand, eight hundred one".