663636460344 has 128 divisors (see below), whose sum is σ = 1985918860800. Its totient is φ = 182130024960.

The previous prime is 663636460327. The next prime is 663636460363. The reversal of 663636460344 is 443064636366.

It is a congruent number.

It is an unprimeable number.

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 in 31 ways as a sum of consecutive naturals, for example, 1642324 + ... + 2006115.

It is an arithmetic number, because the mean of its divisors is an integer number (15514991100).

Almost surely, 2^663636460344 is an apocalyptic number.

It is an amenable number.

663636460344 is an abundant number, since it is smaller than the sum of its proper divisors (1322282400456).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

663636460344 is a wasteful number, since it uses less digits than its factorization.

663636460344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3648525 (or 3648521 counting only the distinct ones).

The product of its (nonzero) digits is 13436928, while the sum is 51.

The spelling of 663636460344 in words is "six hundred sixty-three billion, six hundred thirty-six million, four hundred sixty thousand, three hundred forty-four".