66081495373 has 2 divisors, whose sum is σ = 66081495374. Its totient is φ = 66081495372.

The previous prime is 66081495367. The next prime is 66081495397. The reversal of 66081495373 is 37359418066.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39212712484 + 26868782889 = 198022^2 + 163917^2 .

It is a cyclic number.

It is not a de Polignac number, because 66081495373 - 2²⁵ = 66047940941 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66081495373.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (66081495673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33040747686 + 33040747687.

It is an arithmetic number, because the mean of its divisors is an integer number (33040747687).

Almost surely, 2^66081495373 is an apocalyptic number.

It is an amenable number.

66081495373 is a deficient number, since it is larger than the sum of its proper divisors (1).

66081495373 is an equidigital number, since it uses as much as digits as its factorization.

66081495373 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3265920, while the sum is 52.

The spelling of 66081495373 in words is "sixty-six billion, eighty-one million, four hundred ninety-five thousand, three hundred seventy-three".