20337875689 has 2 divisors, whose sum is σ = 20337875690. Its totient is φ = 20337875688.

The previous prime is 20337875681. The next prime is 20337875749. The reversal of 20337875689 is 98657873302.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16651321600 + 3686554089 = 129040^2 + 60717^2 .

It is a cyclic number.

It is not a de Polignac number, because 20337875689 - 2³ = 20337875681 is a prime.

It is not a weakly prime, because it can be changed into another prime (20337875681) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10168937844 + 10168937845.

It is an arithmetic number, because the mean of its divisors is an integer number (10168937845).

Almost surely, 2^20337875689 is an apocalyptic number.

It is an amenable number.

20337875689 is a deficient number, since it is larger than the sum of its proper divisors (1).

20337875689 is an equidigital number, since it uses as much as digits as its factorization.

20337875689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 15240960, while the sum is 58.

The spelling of 20337875689 in words is "twenty billion, three hundred thirty-seven million, eight hundred seventy-five thousand, six hundred eighty-nine".