66528392933 has 2 divisors, whose sum is σ = 66528392934. Its totient is φ = 66528392932.

The previous prime is 66528392911. The next prime is 66528393031. The reversal of 66528392933 is 33929382566.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40166973889 + 26361419044 = 200417^2 + 162362^2 .

It is a cyclic number.

It is not a de Polignac number, because 66528392933 - 2¹² = 66528388837 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66528392633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33264196466 + 33264196467.

It is an arithmetic number, because the mean of its divisors is an integer number (33264196467).

Almost surely, 2^66528392933 is an apocalyptic number.

It is an amenable number.

66528392933 is a deficient number, since it is larger than the sum of its proper divisors (1).

66528392933 is an equidigital number, since it uses as much as digits as its factorization.

66528392933 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12597120, while the sum is 56.

The spelling of 66528392933 in words is "sixty-six billion, five hundred twenty-eight million, three hundred ninety-two thousand, nine hundred thirty-three".