191012795167 has 2 divisors, whose sum is σ = 191012795168. Its totient is φ = 191012795166.

The previous prime is 191012795111. The next prime is 191012795179. The reversal of 191012795167 is 761597210191.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 191012795167 - 2¹⁹ = 191012270879 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 191012795167.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (191012895167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 95506397583 + 95506397584.

It is an arithmetic number, because the mean of its divisors is an integer number (95506397584).

Almost surely, 2^191012795167 is an apocalyptic number.

191012795167 is a deficient number, since it is larger than the sum of its proper divisors (1).

191012795167 is an equidigital number, since it uses as much as digits as its factorization.

191012795167 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 238140, while the sum is 49.

The spelling of 191012795167 in words is "one hundred ninety-one billion, twelve million, seven hundred ninety-five thousand, one hundred sixty-seven".