21604000023323 has 2 divisors, whose sum is σ = 21604000023324. Its totient is φ = 21604000023322.

The previous prime is 21604000023301. The next prime is 21604000023377. The reversal of 21604000023323 is 32332000040612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 21604000023323 - 2³⁴ = 21586820154139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 21604000023292 and 21604000023301.

It is not a weakly prime, because it can be changed into another prime (21604000023383) 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, 10802000011661 + 10802000011662.

It is an arithmetic number, because the mean of its divisors is an integer number (10802000011662).

Almost surely, 2^{21604000023323} is an apocalyptic number.

21604000023323 is a deficient number, since it is larger than the sum of its proper divisors (1).

21604000023323 is an equidigital number, since it uses as much as digits as its factorization.

21604000023323 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 26.

Adding to 21604000023323 its reverse (32332000040612), we get a palindrome (53936000063935).

The spelling of 21604000023323 in words is "twenty-one trillion, six hundred four billion, twenty-three thousand, three hundred twenty-three".