89580189565 has 4 divisors (see below), whose sum is σ = 107496227484. Its totient is φ = 71664151648.

The previous prime is 89580189557. The next prime is 89580189577. The reversal of 89580189565 is 56598108598.

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 49148229636 + 40431959929 = 221694^2 + 201077^2 .

It is a cyclic number.

It is not a de Polignac number, because 89580189565 - 2³ = 89580189557 is a prime.

It is a super-2 number, since 2×89580189565² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 89580189497 and 89580189506.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 8958018952 + ... + 8958018961.

It is an arithmetic number, because the mean of its divisors is an integer number (26874056871).

Almost surely, 2^89580189565 is an apocalyptic number.

It is an amenable number.

89580189565 is a deficient number, since it is larger than the sum of its proper divisors (17916037919).

89580189565 is a wasteful number, since it uses less digits than its factorization.

89580189565 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17916037918.

The product of its (nonzero) digits is 31104000, while the sum is 64.

The spelling of 89580189565 in words is "eighty-nine billion, five hundred eighty million, one hundred eighty-nine thousand, five hundred sixty-five".