3966633021271 has 2 divisors, whose sum is σ = 3966633021272. Its totient is φ = 3966633021270.

The previous prime is 3966633021269. The next prime is 3966633021313. The reversal of 3966633021271 is 1721203366693.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3966633021271 - 2¹ = 3966633021269 is a prime.

Together with 3966633021269, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3966633021251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1983316510635 + 1983316510636.

It is an arithmetic number, because the mean of its divisors is an integer number (1983316510636).

Almost surely, 2^{3966633021271} is an apocalyptic number.

3966633021271 is a deficient number, since it is larger than the sum of its proper divisors (1).

3966633021271 is an equidigital number, since it uses as much as digits as its factorization.

3966633021271 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1469664, while the sum is 49.

The spelling of 3966633021271 in words is "three trillion, nine hundred sixty-six billion, six hundred thirty-three million, twenty-one thousand, two hundred seventy-one".