66695371207 has 2 divisors, whose sum is σ = 66695371208. Its totient is φ = 66695371206.

The previous prime is 66695371157. The next prime is 66695371229. The reversal of 66695371207 is 70217359666.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66695371207 - 2³⁵ = 32335632839 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66695371297) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33347685603 + 33347685604.

It is an arithmetic number, because the mean of its divisors is an integer number (33347685604).

Almost surely, 2^66695371207 is an apocalyptic number.

66695371207 is a deficient number, since it is larger than the sum of its proper divisors (1).

66695371207 is an equidigital number, since it uses as much as digits as its factorization.

66695371207 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2857680, while the sum is 52.

The spelling of 66695371207 in words is "sixty-six billion, six hundred ninety-five million, three hundred seventy-one thousand, two hundred seven".