21326614423 has 2 divisors, whose sum is σ = 21326614424. Its totient is φ = 21326614422.

The previous prime is 21326614399. The next prime is 21326614457. The reversal of 21326614423 is 32441662312.

It is an a-pointer prime, because the next prime (21326614457) can be obtained adding 21326614423 to its sum of digits (34).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21326614423 - 2⁹ = 21326613911 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21326614523) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10663307211 + 10663307212.

It is an arithmetic number, because the mean of its divisors is an integer number (10663307212).

Almost surely, 2^21326614423 is an apocalyptic number.

21326614423 is a deficient number, since it is larger than the sum of its proper divisors (1).

21326614423 is an equidigital number, since it uses as much as digits as its factorization.

21326614423 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 41472, while the sum is 34.

The spelling of 21326614423 in words is "twenty-one billion, three hundred twenty-six million, six hundred fourteen thousand, four hundred twenty-three".