191064648443 has 2 divisors, whose sum is σ = 191064648444. Its totient is φ = 191064648442.

The previous prime is 191064648427. The next prime is 191064648487. The reversal of 191064648443 is 344846460191.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 191064648443 - 2⁴ = 191064648427 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 191064648391 and 191064648400.

It is not a weakly prime, because it can be changed into another prime (191024648443) 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, 95532324221 + 95532324222.

It is an arithmetic number, because the mean of its divisors is an integer number (95532324222).

Almost surely, 2^191064648443 is an apocalyptic number.

191064648443 is a deficient number, since it is larger than the sum of its proper divisors (1).

191064648443 is an equidigital number, since it uses as much as digits as its factorization.

191064648443 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1990656, while the sum is 50.

The spelling of 191064648443 in words is "one hundred ninety-one billion, sixty-four million, six hundred forty-eight thousand, four hundred forty-three".