21440426103 has 12 divisors (see below), whose sum is σ = 31057241280. Its totient is φ = 14253123456.

The previous prime is 21440426089. The next prime is 21440426141. The reversal of 21440426103 is 30162404412.

It is a happy number.

21440426103 is a `hidden beast` number, since 2 + 1 + 4 + 4 + 0 + 42 + 610 + 3 = 666.

It is not a de Polignac number, because 21440426103 - 2⁸ = 21440425847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21440426003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3371143 + ... + 3377496.

It is an arithmetic number, because the mean of its divisors is an integer number (2588103440).

Almost surely, 2^21440426103 is an apocalyptic number.

21440426103 is a deficient number, since it is larger than the sum of its proper divisors (9616815177).

21440426103 is a wasteful number, since it uses less digits than its factorization.

21440426103 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6748998 (or 6748995 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The spelling of 21440426103 in words is "twenty-one billion, four hundred forty million, four hundred twenty-six thousand, one hundred three".