20088243289 has 9 divisors (see below), whose sum is σ = 20201268789. Its totient is φ = 19975849020.

The previous prime is 20088243269. The next prime is 20088243299. The reversal of 20088243289 is 98234288002.

It is a happy number.

The square root of 20088243289 is 141733.

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

It is not a de Polignac number, because 20088243289 - 2²³ = 20079854681 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20088243269) 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, 38409382 + ... + 38409904.

It is an arithmetic number, because the mean of its divisors is an integer number (2244585421).

Almost surely, 2^20088243289 is an apocalyptic number.

20088243289 is the 141733-rd square number.

20088243289 is the 70867-th centered octagonal number.

It is an amenable number.

20088243289 is a deficient number, since it is larger than the sum of its proper divisors (113025500).

20088243289 is an frugal number, since it uses more digits than its factorization.

20088243289 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1588 (or 794 counting only the distinct ones).

The product of its (nonzero) digits is 442368, while the sum is 46.

The spelling of 20088243289 in words is "twenty billion, eighty-eight million, two hundred forty-three thousand, two hundred eighty-nine".