66673336339 has 2 divisors, whose sum is σ = 66673336340. Its totient is φ = 66673336338.

The previous prime is 66673336321. The next prime is 66673336363. The reversal of 66673336339 is 93363337666.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 66673336339 - 2¹³ = 66673328147 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66673336339.

It is not a weakly prime, because it can be changed into another prime (66673336369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 33336668169 + 33336668170.

It is an arithmetic number, because the mean of its divisors is an integer number (33336668170).

Almost surely, 2^66673336339 is an apocalyptic number.

66673336339 is a deficient number, since it is larger than the sum of its proper divisors (1).

66673336339 is an equidigital number, since it uses as much as digits as its factorization.

66673336339 is an evil number, because the sum of its binary digits is even.

The product of its digits is 19840464, while the sum is 55.

The spelling of 66673336339 in words is "sixty-six billion, six hundred seventy-three million, three hundred thirty-six thousand, three hundred thirty-nine".