20982860239 has 16 divisors (see below), whose sum is σ = 23501850624. Its totient is φ = 18567889600.

The previous prime is 20982860203. The next prime is 20982860251. The reversal of 20982860239 is 93206828902.

It is a cyclic number.

It is not a de Polignac number, because 20982860239 - 2¹⁹ = 20982335951 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 20982860192 and 20982860201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20982860299) 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, 147282 + ... + 252304.

It is an arithmetic number, because the mean of its divisors is an integer number (1468865664).

Almost surely, 2^20982860239 is an apocalyptic number.

20982860239 is a deficient number, since it is larger than the sum of its proper divisors (2518990385).

20982860239 is a wasteful number, since it uses less digits than its factorization.

20982860239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 105518.

The product of its (nonzero) digits is 746496, while the sum is 49.

The spelling of 20982860239 in words is "twenty billion, nine hundred eighty-two million, eight hundred sixty thousand, two hundred thirty-nine".