66317234252 has 24 divisors (see below), whose sum is σ = 117314353296. Its totient is φ = 32799771648.

The previous prime is 66317234213. The next prime is 66317234257. The reversal of 66317234252 is 25243271366.

It is a happy number.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is not an unprimeable number, because it can be changed into a prime (66317234257) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172928 + ... + 403160.

It is an arithmetic number, because the mean of its divisors is an integer number (4888098054).

Almost surely, 2^66317234252 is an apocalyptic number.

It is an amenable number.

66317234252 is a deficient number, since it is larger than the sum of its proper divisors (50997119044).

66317234252 is a wasteful number, since it uses less digits than its factorization.

66317234252 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 231017 (or 231015 counting only the distinct ones).

The product of its digits is 362880, while the sum is 41.

The spelling of 66317234252 in words is "sixty-six billion, three hundred seventeen million, two hundred thirty-four thousand, two hundred fifty-two".