2660044643 has 2 divisors, whose sum is σ = 2660044644. Its totient is φ = 2660044642.

The previous prime is 2660044627. The next prime is 2660044649. The reversal of 2660044643 is 3464400662.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2660044643 - 2⁴ = 2660044627 is a prime.

It is not a weakly prime, because it can be changed into another prime (2660044649) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1330022321 + 1330022322.

It is an arithmetic number, because the mean of its divisors is an integer number (1330022322).

Almost surely, 2^2660044643 is an apocalyptic number.

2660044643 is a deficient number, since it is larger than the sum of its proper divisors (1).

2660044643 is an equidigital number, since it uses as much as digits as its factorization.

2660044643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 82944, while the sum is 35.

The square root of 2660044643 is about 51575.6206264161. The cubic root of 2660044643 is about 1385.5737335486.

The spelling of 2660044643 in words is "two billion, six hundred sixty million, forty-four thousand, six hundred forty-three".