88218738689 has 2 divisors, whose sum is σ = 88218738690. Its totient is φ = 88218738688.

The previous prime is 88218738617. The next prime is 88218738703. The reversal of 88218738689 is 98683781288.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 46231450225 + 41987288464 = 215015^2 + 204908^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-88218738689 is a prime.

It is not a weakly prime, because it can be changed into another prime (88218738589) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 44109369344 + 44109369345.

It is an arithmetic number, because the mean of its divisors is an integer number (44109369345).

Almost surely, 2^88218738689 is an apocalyptic number.

It is an amenable number.

88218738689 is a deficient number, since it is larger than the sum of its proper divisors (1).

88218738689 is an equidigital number, since it uses as much as digits as its factorization.

88218738689 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 74317824, while the sum is 68.

The spelling of 88218738689 in words is "eighty-eight billion, two hundred eighteen million, seven hundred thirty-eight thousand, six hundred eighty-nine".