1966741264643 has 2 divisors, whose sum is σ = 1966741264644. Its totient is φ = 1966741264642.

The previous prime is 1966741264601. The next prime is 1966741264651. The reversal of 1966741264643 is 3464621476691.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1966741264643 is a prime.

It is not a weakly prime, because it can be changed into another prime (1966741164643) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 983370632321 + 983370632322.

It is an arithmetic number, because the mean of its divisors is an integer number (983370632322).

Almost surely, 2^{1966741264643} is an apocalyptic number.

1966741264643 is a deficient number, since it is larger than the sum of its proper divisors (1).

1966741264643 is an equidigital number, since it uses as much as digits as its factorization.

1966741264643 is an evil number, because the sum of its binary digits is even.

The product of its digits is 31352832, while the sum is 59.

The spelling of 1966741264643 in words is "one trillion, nine hundred sixty-six billion, seven hundred forty-one million, two hundred sixty-four thousand, six hundred forty-three".