4452645643 has 2 divisors, whose sum is σ = 4452645644. Its totient is φ = 4452645642.

The previous prime is 4452645623. The next prime is 4452645667. The reversal of 4452645643 is 3465462544.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 4452645643 - 2¹³ = 4452637451 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 4452645643.

It is not a weakly prime, because it can be changed into another prime (4452645623) 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, 2226322821 + 2226322822.

It is an arithmetic number, because the mean of its divisors is an integer number (2226322822).

Almost surely, 2^4452645643 is an apocalyptic number.

4452645643 is a deficient number, since it is larger than the sum of its proper divisors (1).

4452645643 is an equidigital number, since it uses as much as digits as its factorization.

4452645643 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1382400, while the sum is 43.

The square root of 4452645643 is about 66728.1473068150. The cubic root of 4452645643 is about 1645.1520562318.

The spelling of 4452645643 in words is "four billion, four hundred fifty-two million, six hundred forty-five thousand, six hundred forty-three".