66064635213 has 16 divisors (see below), whose sum is σ = 88215177600. Its totient is φ = 43978636800.

The previous prime is 66064635209. The next prime is 66064635223. The reversal of 66064635213 is 31253646066.

It is a happy number.

66064635213 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 66064635213 - 2² = 66064635209 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66064635223) 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, 8983488 + ... + 8990838.

It is an arithmetic number, because the mean of its divisors is an integer number (5513448600).

Almost surely, 2^66064635213 is an apocalyptic number.

It is an amenable number.

66064635213 is a deficient number, since it is larger than the sum of its proper divisors (22150542387).

66064635213 is a wasteful number, since it uses less digits than its factorization.

66064635213 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11332.

The product of its (nonzero) digits is 466560, while the sum is 42.

The spelling of 66064635213 in words is "sixty-six billion, sixty-four million, six hundred thirty-five thousand, two hundred thirteen".