6544045999 has 2 divisors, whose sum is σ = 6544046000. Its totient is φ = 6544045998.

The previous prime is 6544045961. The next prime is 6544046009. The reversal of 6544045999 is 9995404456.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6544045999 - 2²⁹ = 6007175087 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (6544045939) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3272022999 + 3272023000.

It is an arithmetic number, because the mean of its divisors is an integer number (3272023000).

Almost surely, 2^6544045999 is an apocalyptic number.

6544045999 is a deficient number, since it is larger than the sum of its proper divisors (1).

6544045999 is an equidigital number, since it uses as much as digits as its factorization.

6544045999 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6998400, while the sum is 55.

The square root of 6544045999 is about 80895.2779771477. The cubic root of 6544045999 is about 1870.4615329673.

The spelling of 6544045999 in words is "six billion, five hundred forty-four million, forty-five thousand, nine hundred ninety-nine".