20982313609 has 8 divisors (see below), whose sum is σ = 21551800320. Its totient is φ = 20412953136.

The previous prime is 20982313607. The next prime is 20982313613. The reversal of 20982313609 is 90631328902.

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 20982313609 - 2¹ = 20982313607 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20982313603) 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, 375672 + ... + 427894.

It is an arithmetic number, because the mean of its divisors is an integer number (2693975040).

Almost surely, 2^20982313609 is an apocalyptic number.

It is an amenable number.

20982313609 is a deficient number, since it is larger than the sum of its proper divisors (569486711).

20982313609 is a wasteful number, since it uses less digits than its factorization.

20982313609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 63119.

The product of its (nonzero) digits is 139968, while the sum is 43.

The spelling of 20982313609 in words is "twenty billion, nine hundred eighty-two million, three hundred thirteen thousand, six hundred nine".