21923298167 has 2 divisors, whose sum is σ = 21923298168. Its totient is φ = 21923298166.

The previous prime is 21923298139. The next prime is 21923298203. The reversal of 21923298167 is 76189232912.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21923298167 - 2²⁸ = 21654862711 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21923298767) 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, 10961649083 + 10961649084.

It is an arithmetic number, because the mean of its divisors is an integer number (10961649084).

Almost surely, 2^21923298167 is an apocalyptic number.

21923298167 is a deficient number, since it is larger than the sum of its proper divisors (1).

21923298167 is an equidigital number, since it uses as much as digits as its factorization.

21923298167 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 653184, while the sum is 50.

The spelling of 21923298167 in words is "twenty-one billion, nine hundred twenty-three million, two hundred ninety-eight thousand, one hundred sixty-seven".