89135471131081 has 2 divisors, whose sum is σ = 89135471131082. Its totient is φ = 89135471131080.

The previous prime is 89135471131079. The next prime is 89135471131253. The reversal of 89135471131081 is 18013117453198.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 74085268998400 + 15050202132681 = 8607280^2 + 3879459^2 .

It is a cyclic number.

It is not a de Polignac number, because 89135471131081 - 2¹ = 89135471131079 is a prime.

It is a super-2 number, since 2×89135471131081² (a number of 29 digits) contains 22 as substring.

Together with 89135471131079, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (89135471131061) 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, 44567735565540 + 44567735565541.

It is an arithmetic number, because the mean of its divisors is an integer number (44567735565541).

Almost surely, 2^{89135471131081} is an apocalyptic number.

It is an amenable number.

89135471131081 is a deficient number, since it is larger than the sum of its proper divisors (1).

89135471131081 is an equidigital number, since it uses as much as digits as its factorization.

89135471131081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 725760, while the sum is 52.

The spelling of 89135471131081 in words is "eighty-nine trillion, one hundred thirty-five billion, four hundred seventy-one million, one hundred thirty-one thousand, eighty-one".