6644025043 has 2 divisors, whose sum is σ = 6644025044. Its totient is φ = 6644025042.

The previous prime is 6644025001. The next prime is 6644025053. The reversal of 6644025043 is 3405204466.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 6644025043 - 2⁹ = 6644024531 is a prime.

It is a super-2 number, since 2×6644025043² = 88286137544022303698, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (6644025053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3322012521 + 3322012522.

It is an arithmetic number, because the mean of its divisors is an integer number (3322012522).

Almost surely, 2^6644025043 is an apocalyptic number.

6644025043 is a deficient number, since it is larger than the sum of its proper divisors (1).

6644025043 is an equidigital number, since it uses as much as digits as its factorization.

6644025043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 69120, while the sum is 34.

The square root of 6644025043 is about 81510.8891069163. The cubic root of 6644025043 is about 1879.9389827601.

The spelling of 6644025043 in words is "six billion, six hundred forty-four million, twenty-five thousand, forty-three".