21843774340308 has 36 divisors (see below), whose sum is σ = 55282813234740. Its totient is φ = 7272474921216.

The previous prime is 21843774340303. The next prime is 21843774340387. The reversal of 21843774340308 is 80304347734812.

21843774340308 is a `hidden beast` number, since 218 + 43 + 7 + 7 + 43 + 40 + 308 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 12774991420944 + 9068782919364 = 3574212^2 + 3011442^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21843774340303) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 365936085 + ... + 365995772.

It is an arithmetic number, because the mean of its divisors is an integer number (1535633700965).

Almost surely, 2^{21843774340308} is an apocalyptic number.

It is an amenable number.

21843774340308 is an abundant number, since it is smaller than the sum of its proper divisors (33439038894432).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

21843774340308 is a wasteful number, since it uses less digits than its factorization.

21843774340308 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 731932696 (or 731932691 counting only the distinct ones).

The product of its (nonzero) digits is 10838016, while the sum is 54.

The spelling of 21843774340308 in words is "twenty-one trillion, eight hundred forty-three billion, seven hundred seventy-four million, three hundred forty thousand, three hundred eight".