66264660012 has 48 divisors (see below), whose sum is σ = 157957763040. Its totient is φ = 21613283328.

The previous prime is 66264659921. The next prime is 66264660013. The reversal of 66264660012 is 21006646266.

It is not an unprimeable number, because it can be changed into a prime (66264660013) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 97564 + ... + 376892.

It is an arithmetic number, because the mean of its divisors is an integer number (3290786730).

Almost surely, 2^66264660012 is an apocalyptic number.

It is an amenable number.

66264660012 is an abundant number, since it is smaller than the sum of its proper divisors (91693103028).

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

66264660012 is a wasteful number, since it uses less digits than its factorization.

66264660012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 279762 (or 279760 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 39.

The spelling of 66264660012 in words is "sixty-six billion, two hundred sixty-four million, six hundred sixty thousand, twelve".