89131777066 has 16 divisors (see below), whose sum is σ = 138316784040. Its totient is φ = 43026379200.

The previous prime is 89131777061. The next prime is 89131777067. The reversal of 89131777066 is 66077713198.

It can be written as a sum of positive squares in 4 ways, for example, as 78100686225 + 11031090841 = 279465^2 + 105029^2 .

It is a junction number, because it is equal to n+sod(n) for n = 89131776998 and 89131777016.

It is not an unprimeable number, because it can be changed into a prime (89131777061) 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 in 7 ways as a sum of consecutive naturals, for example, 1090216 + ... + 1169116.

Almost surely, 2^89131777066 is an apocalyptic number.

89131777066 is a deficient number, since it is larger than the sum of its proper divisors (49185006974).

89131777066 is a wasteful number, since it uses less digits than its factorization.

89131777066 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98409.

The product of its (nonzero) digits is 2667168, while the sum is 55.

The spelling of 89131777066 in words is "eighty-nine billion, one hundred thirty-one million, seven hundred seventy-seven thousand, sixty-six".