21923558341 has 4 divisors (see below), whose sum is σ = 22223881132. Its totient is φ = 21623235552.

The previous prime is 21923558333. The next prime is 21923558351. The reversal of 21923558341 is 14385532912.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5543398116 + 16380160225 = 74454^2 + 127985^2 .

It is a cyclic number.

It is not a de Polignac number, because 21923558341 - 2³ = 21923558333 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21923558351) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 150161286 + ... + 150161431.

It is an arithmetic number, because the mean of its divisors is an integer number (5555970283).

Almost surely, 2^21923558341 is an apocalyptic number.

It is an amenable number.

21923558341 is a deficient number, since it is larger than the sum of its proper divisors (300322791).

21923558341 is an equidigital number, since it uses as much as digits as its factorization.

21923558341 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 300322790.

The product of its digits is 259200, while the sum is 43.

The spelling of 21923558341 in words is "twenty-one billion, nine hundred twenty-three million, five hundred fifty-eight thousand, three hundred forty-one".