21324266353 has 32 divisors (see below), whose sum is σ = 24986852352. Its totient is φ = 18018201600.

The previous prime is 21324266321. The next prime is 21324266377. The reversal of 21324266353 is 35366242312.

It is a cyclic number.

It is not a de Polignac number, because 21324266353 - 2⁵ = 21324266321 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21324266393) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2285568 + ... + 2294878.

It is an arithmetic number, because the mean of its divisors is an integer number (780839136).

Almost surely, 2^21324266353 is an apocalyptic number.

It is an amenable number.

21324266353 is a deficient number, since it is larger than the sum of its proper divisors (3662585999).

21324266353 is a wasteful number, since it uses less digits than its factorization.

21324266353 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9625.

The product of its digits is 155520, while the sum is 37.

The spelling of 21324266353 in words is "twenty-one billion, three hundred twenty-four million, two hundred sixty-six thousand, three hundred fifty-three".