21302688593 has 8 divisors (see below), whose sum is σ = 23283394560. Its totient is φ = 19402827840.

The previous prime is 21302688577. The next prime is 21302688607. The reversal of 21302688593 is 39588620312.

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 21302688593 - 2⁴ = 21302688577 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21302688553) 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, 20210753 + ... + 20211806.

It is an arithmetic number, because the mean of its divisors is an integer number (2910424320).

Almost surely, 2^21302688593 is an apocalyptic number.

It is an amenable number.

21302688593 is a deficient number, since it is larger than the sum of its proper divisors (1980705967).

21302688593 is a wasteful number, since it uses less digits than its factorization.

21302688593 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40422607.

The product of its (nonzero) digits is 622080, while the sum is 47.

The spelling of 21302688593 in words is "twenty-one billion, three hundred two million, six hundred eighty-eight thousand, five hundred ninety-three".