66806684283 has 16 divisors (see below), whose sum is σ = 89295040800. Its totient is φ = 44428190976.

The previous prime is 66806684209. The next prime is 66806684299. The reversal of 66806684283 is 38248660866.

It is a happy number.

It is not a de Polignac number, because 66806684283 - 2⁸ = 66806684027 is a prime.

It is not an unprimeable number, because it can be changed into a prime (66806684683) 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, 2114841 + ... + 2146197.

It is an arithmetic number, because the mean of its divisors is an integer number (5580940050).

Almost surely, 2^66806684283 is an apocalyptic number.

66806684283 is a deficient number, since it is larger than the sum of its proper divisors (22488356517).

66806684283 is a wasteful number, since it uses less digits than its factorization.

66806684283 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33086.

The product of its (nonzero) digits is 15925248, while the sum is 57.

The spelling of 66806684283 in words is "sixty-six billion, eight hundred six million, six hundred eighty-four thousand, two hundred eighty-three".