20943010089 has 9 divisors (see below), whose sum is σ = 30251641693. Its totient is φ = 13961717292.

The previous prime is 20943010087. The next prime is 20943010093. The reversal of 20943010089 is 98001034902.

The square root of 20943010089 is 144717.

It is a perfect power (a square), and thus also a powerful number.

20943010089 is a `hidden beast` number, since 209 + 430 + 10 + 0 + 8 + 9 = 666.

It is a tau number, because it is divible by the number of its divisors (9).

It is not a de Polignac number, because 20943010089 - 2¹ = 20943010087 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (20943010087) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 410032 + ... + 458270.

Almost surely, 2^20943010089 is an apocalyptic number.

20943010089 is the 144717-th square number.

20943010089 is the 72359-th centered octagonal number.

It is an amenable number.

20943010089 is a deficient number, since it is larger than the sum of its proper divisors (9308631604).

20943010089 is an frugal number, since it uses more digits than its factorization.

20943010089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 96484 (or 48242 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

Multiplying 20943010089 by its sum of digits (36), we get a square (753948363204 = 868302²).

The spelling of 20943010089 in words is "twenty billion, nine hundred forty-three million, ten thousand, eighty-nine".