20245703289 has 16 divisors (see below), whose sum is σ = 32474311680. Its totient is φ = 10960079760.

The previous prime is 20245703263. The next prime is 20245703353. The reversal of 20245703289 is 98230754202.

It is not a de Polignac number, because 20245703289 - 2¹⁹ = 20245179001 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 20245703289.

It is not an unprimeable number, because it can be changed into a prime (20245703089) 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, 25370157 + ... + 25370954.

It is an arithmetic number, because the mean of its divisors is an integer number (2029644480).

Almost surely, 2^20245703289 is an apocalyptic number.

It is an amenable number.

20245703289 is a deficient number, since it is larger than the sum of its proper divisors (12228608391).

20245703289 is a wasteful number, since it uses less digits than its factorization.

20245703289 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50741140.

The product of its (nonzero) digits is 241920, while the sum is 42.

The spelling of 20245703289 in words is "twenty billion, two hundred forty-five million, seven hundred three thousand, two hundred eighty-nine".