6441056569 has 2 divisors, whose sum is σ = 6441056570. Its totient is φ = 6441056568.

The previous prime is 6441056549. The next prime is 6441056599. The reversal of 6441056569 is 9656501446.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3433960000 + 3007096569 = 58600^2 + 54837^2 .

It is a cyclic number.

It is not a de Polignac number, because 6441056569 - 2²⁵ = 6407502137 is a prime.

It is a super-2 number, since 2×6441056569² = 82974419450116103522, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6441056549) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3220528284 + 3220528285.

It is an arithmetic number, because the mean of its divisors is an integer number (3220528285).

Almost surely, 2^6441056569 is an apocalyptic number.

It is an amenable number.

6441056569 is a deficient number, since it is larger than the sum of its proper divisors (1).

6441056569 is an equidigital number, since it uses as much as digits as its factorization.

6441056569 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 46.

The square root of 6441056569 is about 80256.1933373369. The cubic root of 6441056569 is about 1860.5972345995.

The spelling of 6441056569 in words is "six billion, four hundred forty-one million, fifty-six thousand, five hundred sixty-nine".