861232232167 has 2 divisors, whose sum is σ = 861232232168. Its totient is φ = 861232232166.

The previous prime is 861232232093. The next prime is 861232232173. The reversal of 861232232167 is 761232232168.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 861232232167 - 2³¹ = 859084748519 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (861232232767) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 430616116083 + 430616116084.

It is an arithmetic number, because the mean of its divisors is an integer number (430616116084).

Almost surely, 2^861232232167 is an apocalyptic number.

861232232167 is a deficient number, since it is larger than the sum of its proper divisors (1).

861232232167 is an equidigital number, since it uses as much as digits as its factorization.

861232232167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 290304, while the sum is 43.

Subtracting from 861232232167 its reverse (761232232168), we obtain a palindrome (99999999999).

The spelling of 861232232167 in words is "eight hundred sixty-one billion, two hundred thirty-two million, two hundred thirty-two thousand, one hundred sixty-seven".