66644266232 has 16 divisors (see below), whose sum is σ = 125256234600. Its totient is φ = 33242603680.

The previous prime is 66644266229. The next prime is 66644266243. The reversal of 66644266232 is 23266244666.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 9937619 + ... + 9944322.

Almost surely, 2^66644266232 is an apocalyptic number.

It is an amenable number.

66644266232 is a deficient number, since it is larger than the sum of its proper divisors (58611968368).

66644266232 is a wasteful number, since it uses less digits than its factorization.

66644266232 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19882366 (or 19882362 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 47.

The spelling of 66644266232 in words is "sixty-six billion, six hundred forty-four million, two hundred sixty-six thousand, two hundred thirty-two".