66475250701 has 2 divisors, whose sum is σ = 66475250702. Its totient is φ = 66475250700.

The previous prime is 66475250687. The next prime is 66475250719. The reversal of 66475250701 is 10705257466.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 62525002500 + 3950248201 = 250050^2 + 62851^2 .

It is a cyclic number.

It is not a de Polignac number, because 66475250701 - 2⁵ = 66475250669 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66475250731) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33237625350 + 33237625351.

It is an arithmetic number, because the mean of its divisors is an integer number (33237625351).

Almost surely, 2^66475250701 is an apocalyptic number.

It is an amenable number.

66475250701 is a deficient number, since it is larger than the sum of its proper divisors (1).

66475250701 is an equidigital number, since it uses as much as digits as its factorization.

66475250701 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 352800, while the sum is 43.

The spelling of 66475250701 in words is "sixty-six billion, four hundred seventy-five million, two hundred fifty thousand, seven hundred one".