66730575233 has 16 divisors (see below), whose sum is σ = 76534381440. Its totient is φ = 56994852096.

The previous prime is 66730575229. The next prime is 66730575253. The reversal of 66730575233 is 33257503766.

66730575233 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66730575233 - 2² = 66730575229 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (66730575253) 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, 2255903 + ... + 2285291.

It is an arithmetic number, because the mean of its divisors is an integer number (4783398840).

Almost surely, 2^66730575233 is an apocalyptic number.

It is an amenable number.

66730575233 is a deficient number, since it is larger than the sum of its proper divisors (9803806207).

66730575233 is a wasteful number, since it uses less digits than its factorization.

66730575233 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30536.

The product of its (nonzero) digits is 2381400, while the sum is 47.

The spelling of 66730575233 in words is "sixty-six billion, seven hundred thirty million, five hundred seventy-five thousand, two hundred thirty-three".