89561321088 has 128 divisors (see below), whose sum is σ = 239686128000. Its totient is φ = 29630164992.

The previous prime is 89561321033. The next prime is 89561321141. The reversal of 89561321088 is 88012316598.

It is a tau number, because it is divible by the number of its divisors (128).

It is a self number, because there is not a number n which added to its sum of digits gives 89561321088.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 31567606 + ... + 31570442.

It is an arithmetic number, because the mean of its divisors is an integer number (1872547875).

Almost surely, 2^89561321088 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89561321088, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (119843064000).

89561321088 is an abundant number, since it is smaller than the sum of its proper divisors (150124806912).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

89561321088 is a wasteful number, since it uses less digits than its factorization.

89561321088 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3442 (or 3430 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 51.

The spelling of 89561321088 in words is "eighty-nine billion, five hundred sixty-one million, three hundred twenty-one thousand, eighty-eight".