21336604703 has 4 divisors (see below), whose sum is σ = 21532353480. Its totient is φ = 21140855928.

The previous prime is 21336604699. The next prime is 21336604717. The reversal of 21336604703 is 30740663312.

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 21336604703 - 2² = 21336604699 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 (21336603703) 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, 97874225 + ... + 97874442.

It is an arithmetic number, because the mean of its divisors is an integer number (5383088370).

Almost surely, 2^21336604703 is an apocalyptic number.

21336604703 is a deficient number, since it is larger than the sum of its proper divisors (195748777).

21336604703 is a wasteful number, since it uses less digits than its factorization.

21336604703 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195748776.

The product of its (nonzero) digits is 54432, while the sum is 35.

The spelling of 21336604703 in words is "twenty-one billion, three hundred thirty-six million, six hundred four thousand, seven hundred three".