66970035643373 has 2 divisors, whose sum is σ = 66970035643374. Its totient is φ = 66970035643372.

The previous prime is 66970035643337. The next prime is 66970035643393. The reversal of 66970035643373 is 37334653007966.

Together with previous prime (66970035643337) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 49879443001444 + 17090592641929 = 7062538^2 + 4134077^2 .

It is a cyclic number.

It is not a de Polignac number, because 66970035643373 - 2⁸ = 66970035643117 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66970035643393) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33485017821686 + 33485017821687.

It is an arithmetic number, because the mean of its divisors is an integer number (33485017821687).

Almost surely, 2^{66970035643373} is an apocalyptic number.

It is an amenable number.

66970035643373 is a deficient number, since it is larger than the sum of its proper divisors (1).

66970035643373 is an equidigital number, since it uses as much as digits as its factorization.

66970035643373 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 154314720, while the sum is 62.

The spelling of 66970035643373 in words is "sixty-six trillion, nine hundred seventy billion, thirty-five million, six hundred forty-three thousand, three hundred seventy-three".