20137206589 has 2 divisors, whose sum is σ = 20137206590. Its totient is φ = 20137206588.

The previous prime is 20137206553. The next prime is 20137206623. The reversal of 20137206589 is 98560273102.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18419104089 + 1718102500 = 135717^2 + 41450^2 .

It is a cyclic number.

It is not a de Polignac number, because 20137206589 - 2²⁵ = 20103652157 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20137206389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10068603294 + 10068603295.

It is an arithmetic number, because the mean of its divisors is an integer number (10068603295).

Almost surely, 2^20137206589 is an apocalyptic number.

It is an amenable number.

20137206589 is a deficient number, since it is larger than the sum of its proper divisors (1).

20137206589 is an equidigital number, since it uses as much as digits as its factorization.

20137206589 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 181440, while the sum is 43.

The spelling of 20137206589 in words is "twenty billion, one hundred thirty-seven million, two hundred six thousand, five hundred eighty-nine".