66313373129 has 2 divisors, whose sum is σ = 66313373130. Its totient is φ = 66313373128.

The previous prime is 66313373053. The next prime is 66313373177. The reversal of 66313373129 is 92137331366.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34170261904 + 32143111225 = 184852^2 + 179285^2 .

It is a cyclic number.

It is not a de Polignac number, because 66313373129 - 2²⁰ = 66312324553 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66313373129.

It is not a weakly prime, because it can be changed into another prime (66313373429) 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, 33156686564 + 33156686565.

It is an arithmetic number, because the mean of its divisors is an integer number (33156686565).

Almost surely, 2^66313373129 is an apocalyptic number.

It is an amenable number.

66313373129 is a deficient number, since it is larger than the sum of its proper divisors (1).

66313373129 is an equidigital number, since it uses as much as digits as its factorization.

66313373129 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 367416, while the sum is 44.

The spelling of 66313373129 in words is "sixty-six billion, three hundred thirteen million, three hundred seventy-three thousand, one hundred twenty-nine".