21134321403589 has 2 divisors, whose sum is σ = 21134321403590. Its totient is φ = 21134321403588.

The previous prime is 21134321403451. The next prime is 21134321403623. The reversal of 21134321403589 is 98530412343112.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 11072642243364 + 10061679160225 = 3327558^2 + 3172015^2 .

It is a cyclic number.

It is not a de Polignac number, because 21134321403589 - 2²¹ = 21134319306437 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (21134322403589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10567160701794 + 10567160701795.

It is an arithmetic number, because the mean of its divisors is an integer number (10567160701795).

Almost surely, 2^{21134321403589} is an apocalyptic number.

It is an amenable number.

21134321403589 is a deficient number, since it is larger than the sum of its proper divisors (1).

21134321403589 is an equidigital number, since it uses as much as digits as its factorization.

21134321403589 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 622080, while the sum is 46.

The spelling of 21134321403589 in words is "twenty-one trillion, one hundred thirty-four billion, three hundred twenty-one million, four hundred three thousand, five hundred eighty-nine".