88421716589 has 2 divisors, whose sum is σ = 88421716590. Its totient is φ = 88421716588.

The previous prime is 88421716573. The next prime is 88421716639. The reversal of 88421716589 is 98561712488.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 80264556100 + 8157160489 = 283310^2 + 90317^2 .

It is a cyclic number.

It is not a de Polignac number, because 88421716589 - 2⁴ = 88421716573 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (88421716529) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44210858294 + 44210858295.

It is an arithmetic number, because the mean of its divisors is an integer number (44210858295).

Almost surely, 2^88421716589 is an apocalyptic number.

It is an amenable number.

88421716589 is a deficient number, since it is larger than the sum of its proper divisors (1).

88421716589 is an equidigital number, since it uses as much as digits as its factorization.

88421716589 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7741440, while the sum is 59.

The spelling of 88421716589 in words is "eighty-eight billion, four hundred twenty-one million, seven hundred sixteen thousand, five hundred eighty-nine".