89445081672 has 96 divisors (see below), whose sum is σ = 244290271680. Its totient is φ = 29564346240.

The previous prime is 89445081629. The next prime is 89445081679. The reversal of 89445081672 is 27618054498.

It is a happy number.

89445081672 is a `hidden beast` number, since 89 + 44 + 508 + 16 + 7 + 2 = 666.

It is not an unprimeable number, because it can be changed into a prime (89445081679) 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 23 ways as a sum of consecutive naturals, for example, 5678047 + ... + 5693777.

It is an arithmetic number, because the mean of its divisors is an integer number (2544690330).

Almost surely, 2^89445081672 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 89445081672, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (122145135840).

89445081672 is an abundant number, since it is smaller than the sum of its proper divisors (154845190008).

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

89445081672 is a wasteful number, since it uses less digits than its factorization.

89445081672 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16403 (or 16396 counting only the distinct ones).

The product of its (nonzero) digits is 3870720, while the sum is 54.

The spelling of 89445081672 in words is "eighty-nine billion, four hundred forty-five million, eighty-one thousand, six hundred seventy-two".