63666536884 has 12 divisors (see below), whose sum is σ = 111487012000. Its totient is φ = 31813104888.

The previous prime is 63666536837. The next prime is 63666536903. The reversal of 63666536884 is 48863566636.

It is a happy number.

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 3 ways as a sum of consecutive naturals, for example, 5033784 + ... + 5046415.

Almost surely, 2^63666536884 is an apocalyptic number.

It is an amenable number.

63666536884 is a deficient number, since it is larger than the sum of its proper divisors (47820475116).

63666536884 is a wasteful number, since it uses less digits than its factorization.

63666536884 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10081782 (or 10081780 counting only the distinct ones).

The product of its digits is 89579520, while the sum is 61.

The spelling of 63666536884 in words is "sixty-three billion, six hundred sixty-six million, five hundred thirty-six thousand, eight hundred eighty-four".