89659666843 has 16 divisors (see below), whose sum is σ = 93480747840. Its totient is φ = 85919809536.

The previous prime is 89659666813. The next prime is 89659666847. The reversal of 89659666843 is 34866695698.

It is a cyclic number.

It is not a de Polignac number, because 89659666843 - 2²¹ = 89657569691 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89659666847) 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 15 ways as a sum of consecutive naturals, for example, 793330 + ... + 899272.

It is an arithmetic number, because the mean of its divisors is an integer number (5842546740).

Almost surely, 2^89659666843 is an apocalyptic number.

89659666843 is a deficient number, since it is larger than the sum of its proper divisors (3821080997).

89659666843 is a wasteful number, since it uses less digits than its factorization.

89659666843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 106326.

The product of its digits is 403107840, while the sum is 70.

The spelling of 89659666843 in words is "eighty-nine billion, six hundred fifty-nine million, six hundred sixty-six thousand, eight hundred forty-three".