89165921587 has 8 divisors (see below), whose sum is σ = 96192315936. Its totient is φ = 82337453952.

The previous prime is 89165921573. The next prime is 89165921597. The reversal of 89165921587 is 78512956198.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 89165921587 - 2²³ = 89157532979 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (89165921597) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 49480743 + ... + 49482544.

It is an arithmetic number, because the mean of its divisors is an integer number (12024039492).

Almost surely, 2^89165921587 is an apocalyptic number.

89165921587 is a deficient number, since it is larger than the sum of its proper divisors (7026394349).

89165921587 is a wasteful number, since it uses less digits than its factorization.

89165921587 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98963357.

The product of its digits is 10886400, while the sum is 61.

The spelling of 89165921587 in words is "eighty-nine billion, one hundred sixty-five million, nine hundred twenty-one thousand, five hundred eighty-seven".