5664231281 has 2 divisors, whose sum is σ = 5664231282. Its totient is φ = 5664231280.

The previous prime is 5664231269. The next prime is 5664231283. The reversal of 5664231281 is 1821324665.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 5221507600 + 442723681 = 72260^2 + 21041^2 .

It is a cyclic number.

It is not a de Polignac number, because 5664231281 - 2⁶ = 5664231217 is a prime.

It is a super-2 number, since 2×5664231281² = 64167032009317801922, which contains 22 as substring.

Together with 5664231283, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (5664231283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2832115640 + 2832115641.

It is an arithmetic number, because the mean of its divisors is an integer number (2832115641).

Almost surely, 2^5664231281 is an apocalyptic number.

It is an amenable number.

5664231281 is a deficient number, since it is larger than the sum of its proper divisors (1).

5664231281 is an equidigital number, since it uses as much as digits as its factorization.

5664231281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69120, while the sum is 38.

The square root of 5664231281 is about 75261.0874290294. The cubic root of 5664231281 is about 1782.5716396088.

The spelling of 5664231281 in words is "five billion, six hundred sixty-four million, two hundred thirty-one thousand, two hundred eighty-one".