823791272167 has 2 divisors, whose sum is σ = 823791272168. Its totient is φ = 823791272166.

The previous prime is 823791272141. The next prime is 823791272207. The reversal of 823791272167 is 761272197328.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 823791272167 - 2¹⁵ = 823791239399 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (823791273167) 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, 411895636083 + 411895636084.

It is an arithmetic number, because the mean of its divisors is an integer number (411895636084).

Almost surely, 2^823791272167 is an apocalyptic number.

823791272167 is a deficient number, since it is larger than the sum of its proper divisors (1).

823791272167 is an equidigital number, since it uses as much as digits as its factorization.

823791272167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3556224, while the sum is 55.

The spelling of 823791272167 in words is "eight hundred twenty-three billion, seven hundred ninety-one million, two hundred seventy-two thousand, one hundred sixty-seven".