330661405643 has 2 divisors, whose sum is σ = 330661405644. Its totient is φ = 330661405642.

The previous prime is 330661405621. The next prime is 330661405651. The reversal of 330661405643 is 346504166033.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 330661405643 - 2¹² = 330661401547 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 330661405643.

It is not a weakly prime, because it can be changed into another prime (330661305643) 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, 165330702821 + 165330702822.

It is an arithmetic number, because the mean of its divisors is an integer number (165330702822).

Almost surely, 2^330661405643 is an apocalyptic number.

330661405643 is a deficient number, since it is larger than the sum of its proper divisors (1).

330661405643 is an equidigital number, since it uses as much as digits as its factorization.

330661405643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 466560, while the sum is 41.

The spelling of 330661405643 in words is "three hundred thirty billion, six hundred sixty-one million, four hundred five thousand, six hundred forty-three".