5644945989503 has 2 divisors, whose sum is σ = 5644945989504. Its totient is φ = 5644945989502.

The previous prime is 5644945989479. The next prime is 5644945989511. The reversal of 5644945989503 is 3059895494465.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 5644945989503 - 2⁸ = 5644945989247 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5644945989203) 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, 2822472994751 + 2822472994752.

It is an arithmetic number, because the mean of its divisors is an integer number (2822472994752).

Almost surely, 2^{5644945989503} is an apocalyptic number.

5644945989503 is a deficient number, since it is larger than the sum of its proper divisors (1).

5644945989503 is an equidigital number, since it uses as much as digits as its factorization.

5644945989503 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 839808000, while the sum is 71.

The spelling of 5644945989503 in words is "five trillion, six hundred forty-four billion, nine hundred forty-five million, nine hundred eighty-nine thousand, five hundred three".