66635750707 has 2 divisors, whose sum is σ = 66635750708. Its totient is φ = 66635750706.

The previous prime is 66635750689. The next prime is 66635750711. The reversal of 66635750707 is 70705753666.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 66635750707 - 2⁷ = 66635750579 is a prime.

It is not a weakly prime, because it can be changed into another prime (66635750507) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33317875353 + 33317875354.

It is an arithmetic number, because the mean of its divisors is an integer number (33317875354).

Almost surely, 2^66635750707 is an apocalyptic number.

66635750707 is a deficient number, since it is larger than the sum of its proper divisors (1).

66635750707 is an equidigital number, since it uses as much as digits as its factorization.

66635750707 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5556600, while the sum is 52.

The spelling of 66635750707 in words is "sixty-six billion, six hundred thirty-five million, seven hundred fifty thousand, seven hundred seven".