66353712227 has 12 divisors (see below), whose sum is σ = 72940947408. Its totient is φ = 60316014000.

The previous prime is 66353712223. The next prime is 66353712239. The reversal of 66353712227 is 72221735366.

It is a happy number.

It is not a de Polignac number, because 66353712227 - 2² = 66353712223 is a prime.

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66353712223) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1906778 + ... + 1941264.

It is an arithmetic number, because the mean of its divisors is an integer number (6078412284).

Almost surely, 2^66353712227 is an apocalyptic number.

66353712227 is a deficient number, since it is larger than the sum of its proper divisors (6587235181).

66353712227 is a wasteful number, since it uses less digits than its factorization.

66353712227 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50410 (or 50399 counting only the distinct ones).

The product of its digits is 635040, while the sum is 44.

The spelling of 66353712227 in words is "sixty-six billion, three hundred fifty-three million, seven hundred twelve thousand, two hundred twenty-seven".