21325336559 has 8 divisors (see below), whose sum is σ = 21513059568. Its totient is φ = 21138382080.

The previous prime is 21325336517. The next prime is 21325336619. The reversal of 21325336559 is 95563352312.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 21325336559 - 2¹² = 21325332463 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 (21325396559) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136322 + ... + 247455.

It is an arithmetic number, because the mean of its divisors is an integer number (2689132446).

Almost surely, 2^21325336559 is an apocalyptic number.

21325336559 is a deficient number, since it is larger than the sum of its proper divisors (187723009).

21325336559 is a wasteful number, since it uses less digits than its factorization.

21325336559 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 384265.

The product of its digits is 729000, while the sum is 44.

The spelling of 21325336559 in words is "twenty-one billion, three hundred twenty-five million, three hundred thirty-six thousand, five hundred fifty-nine".