21468604013 has 16 divisors (see below), whose sum is σ = 22827078720. Its totient is φ = 20133277056.

The previous prime is 21468604009. The next prime is 21468604019. The reversal of 21468604013 is 31040686412.

It is a cyclic number.

It is not a de Polignac number, because 21468604013 - 2² = 21468604009 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 (21468604019) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3365495 + ... + 3371867.

It is an arithmetic number, because the mean of its divisors is an integer number (1426692420).

Almost surely, 2^21468604013 is an apocalyptic number.

It is an amenable number.

21468604013 is a deficient number, since it is larger than the sum of its proper divisors (1358474707).

21468604013 is a wasteful number, since it uses less digits than its factorization.

21468604013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8156.

The product of its (nonzero) digits is 27648, while the sum is 35.

The spelling of 21468604013 in words is "twenty-one billion, four hundred sixty-eight million, six hundred four thousand, thirteen".