23221613409 has 4 divisors (see below), whose sum is σ = 30962151216. Its totient is φ = 15481075604.

The previous prime is 23221613357. The next prime is 23221613411. The reversal of 23221613409 is 90431612232.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 23221613409 - 2¹⁶ = 23221547873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23221613409.

It is not an unprimeable number, because it can be changed into a prime (23221613479) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3870268899 + ... + 3870268904.

It is an arithmetic number, because the mean of its divisors is an integer number (7740537804).

Almost surely, 2^23221613409 is an apocalyptic number.

It is an amenable number.

23221613409 is a deficient number, since it is larger than the sum of its proper divisors (7740537807).

23221613409 is an equidigital number, since it uses as much as digits as its factorization.

23221613409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7740537806.

The product of its (nonzero) digits is 15552, while the sum is 33.

The spelling of 23221613409 in words is "twenty-three billion, two hundred twenty-one million, six hundred thirteen thousand, four hundred nine".