66117224272 has 40 divisors (see below), whose sum is σ = 140528550240. Its totient is φ = 29885374080.

The previous prime is 66117224213. The next prime is 66117224317. The reversal of 66117224272 is 27242271166.

66117224272 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1017843 + ... + 1080850.

It is an arithmetic number, because the mean of its divisors is an integer number (3513213756).

Almost surely, 2^66117224272 is an apocalyptic number.

It is an amenable number.

66117224272 is an abundant number, since it is smaller than the sum of its proper divisors (74411325968).

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

66117224272 is a wasteful number, since it uses less digits than its factorization.

66117224272 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2098891 (or 2098885 counting only the distinct ones).

The product of its digits is 112896, while the sum is 40.

The spelling of 66117224272 in words is "sixty-six billion, one hundred seventeen million, two hundred twenty-four thousand, two hundred seventy-two".