21440622383 has 4 divisors (see below), whose sum is σ = 21509123088. Its totient is φ = 21372121680.

The previous prime is 21440622367. The next prime is 21440622391. The reversal of 21440622383 is 38322604412.

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

It is a cyclic number.

It is not a de Polignac number, because 21440622383 - 2⁴ = 21440622367 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 (21440622583) 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, 34249883 + ... + 34250508.

It is an arithmetic number, because the mean of its divisors is an integer number (5377280772).

Almost surely, 2^21440622383 is an apocalyptic number.

21440622383 is a deficient number, since it is larger than the sum of its proper divisors (68500705).

21440622383 is an equidigital number, since it uses as much as digits as its factorization.

21440622383 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68500704.

The product of its (nonzero) digits is 55296, while the sum is 35.

The spelling of 21440622383 in words is "twenty-one billion, four hundred forty million, six hundred twenty-two thousand, three hundred eighty-three".