191283319567 has 2 divisors, whose sum is σ = 191283319568. Its totient is φ = 191283319566.

The previous prime is 191283319537. The next prime is 191283319621. The reversal of 191283319567 is 765913382191.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-191283319567 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191283319537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95641659783 + 95641659784.

It is an arithmetic number, because the mean of its divisors is an integer number (95641659784).

Almost surely, 2^191283319567 is an apocalyptic number.

191283319567 is a deficient number, since it is larger than the sum of its proper divisors (1).

191283319567 is an equidigital number, since it uses as much as digits as its factorization.

191283319567 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2449440, while the sum is 55.

The spelling of 191283319567 in words is "one hundred ninety-one billion, two hundred eighty-three million, three hundred nineteen thousand, five hundred sixty-seven".