89665160993 has 4 divisors (see below), whose sum is σ = 89674831428. Its totient is φ = 89655490560.

The previous prime is 89665160947. The next prime is 89665161007. The reversal of 89665160993 is 39906156698.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 74655725824 + 15009435169 = 273232^2 + 122513^2 .

It is a cyclic number.

It is not a de Polignac number, because 89665160993 - 2³² = 85370193697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89665160933) 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 3 ways as a sum of consecutive naturals, for example, 4821296 + ... + 4839857.

It is an arithmetic number, because the mean of its divisors is an integer number (22418707857).

Almost surely, 2^89665160993 is an apocalyptic number.

It is an amenable number.

89665160993 is a deficient number, since it is larger than the sum of its proper divisors (9670435).

89665160993 is an equidigital number, since it uses as much as digits as its factorization.

89665160993 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9670434.

The product of its (nonzero) digits is 18895680, while the sum is 62.

The spelling of 89665160993 in words is "eighty-nine billion, six hundred sixty-five million, one hundred sixty thousand, nine hundred ninety-three".