2126389308089 has 2 divisors, whose sum is σ = 2126389308090. Its totient is φ = 2126389308088.

The previous prime is 2126389308061. The next prime is 2126389308103. The reversal of 2126389308089 is 9808039836212.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2090892864064 + 35496444025 = 1445992^2 + 188405^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2126389308089 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (2126389308889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1063194654044 + 1063194654045.

It is an arithmetic number, because the mean of its divisors is an integer number (1063194654045).

Almost surely, 2^{2126389308089} is an apocalyptic number.

It is an amenable number.

2126389308089 is a deficient number, since it is larger than the sum of its proper divisors (1).

2126389308089 is an equidigital number, since it uses as much as digits as its factorization.

2126389308089 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8957952, while the sum is 59.

The spelling of 2126389308089 in words is "two trillion, one hundred twenty-six billion, three hundred eighty-nine million, three hundred eight thousand, eighty-nine".