67066235009 has 2 divisors, whose sum is σ = 67066235010. Its totient is φ = 67066235008.

The previous prime is 67066234951. The next prime is 67066235021. The reversal of 67066235009 is 90053266076.

67066235009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46611514609 + 20454720400 = 215897^2 + 143020^2 .

It is a cyclic number.

It is not a de Polignac number, because 67066235009 - 2²⁸ = 66797799553 is a prime.

It is not a weakly prime, because it can be changed into another prime (67066235099) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33533117504 + 33533117505.

It is an arithmetic number, because the mean of its divisors is an integer number (33533117505).

Almost surely, 2^67066235009 is an apocalyptic number.

It is an amenable number.

67066235009 is a deficient number, since it is larger than the sum of its proper divisors (1).

67066235009 is an equidigital number, since it uses as much as digits as its factorization.

67066235009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 44.

The spelling of 67066235009 in words is "sixty-seven billion, sixty-six million, two hundred thirty-five thousand, nine".