6444242266503 has 32 divisors (see below), whose sum is σ = 8860334098176. Its totient is φ = 4163733520128.

The previous prime is 6444242266481. The next prime is 6444242266513. The reversal of 6444242266503 is 3056622424446.

It is not a de Polignac number, because 6444242266503 - 2⁸ = 6444242266247 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6444242266513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 39453000 + ... + 39616002.

It is an arithmetic number, because the mean of its divisors is an integer number (276885440568).

Almost surely, 2^{6444242266503} is an apocalyptic number.

6444242266503 is a deficient number, since it is larger than the sum of its proper divisors (2416091831673).

6444242266503 is a wasteful number, since it uses less digits than its factorization.

6444242266503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 165423.

The product of its (nonzero) digits is 6635520, while the sum is 48.

The spelling of 6444242266503 in words is "six trillion, four hundred forty-four billion, two hundred forty-two million, two hundred sixty-six thousand, five hundred three".