663445544366 has 32 divisors (see below), whose sum is σ = 1096522652160. Its totient is φ = 298543428000.

The previous prime is 663445544357. The next prime is 663445544387.

663445544366 is nontrivially palindromic in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 26560415 + ... + 26585381.

It is an arithmetic number, because the mean of its divisors is an integer number (34266332880).

Almost surely, 2^663445544366 is an apocalyptic number.

663445544366 is a deficient number, since it is larger than the sum of its proper divisors (433077107794).

663445544366 is a wasteful number, since it uses less digits than its factorization.

663445544366 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37040.

The product of its digits is 74649600, while the sum is 56.

The spelling of 663445544366 in words is "six hundred sixty-three billion, four hundred forty-five million, five hundred forty-four thousand, three hundred sixty-six".