66202530672 has 20 divisors (see below), whose sum is σ = 171023204360. Its totient is φ = 22067510208.

The previous prime is 66202530617. The next prime is 66202530673. The reversal of 66202530672 is 27603520266.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 66202530672.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66202530673) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 689609647 + ... + 689609742.

It is an arithmetic number, because the mean of its divisors is an integer number (8551160218).

Almost surely, 2^66202530672 is an apocalyptic number.

It is an amenable number.

66202530672 is an abundant number, since it is smaller than the sum of its proper divisors (104820673688).

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

66202530672 is a wasteful number, since it uses less digits than its factorization.

66202530672 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1379219400 (or 1379219394 counting only the distinct ones).

The product of its (nonzero) digits is 181440, while the sum is 39.

The spelling of 66202530672 in words is "sixty-six billion, two hundred two million, five hundred thirty thousand, six hundred seventy-two".