644672024083 has 2 divisors, whose sum is σ = 644672024084. Its totient is φ = 644672024082.

The previous prime is 644672024081. The next prime is 644672024119. The reversal of 644672024083 is 380420276446.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 644672024083 - 2¹ = 644672024081 is a prime.

Together with 644672024081, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (644672024081) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 322336012041 + 322336012042.

It is an arithmetic number, because the mean of its divisors is an integer number (322336012042).

Almost surely, 2^644672024083 is an apocalyptic number.

644672024083 is a deficient number, since it is larger than the sum of its proper divisors (1).

644672024083 is an equidigital number, since it uses as much as digits as its factorization.

644672024083 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1548288, while the sum is 46.

The spelling of 644672024083 in words is "six hundred forty-four billion, six hundred seventy-two million, twenty-four thousand, eighty-three".