89172873720 has 384 divisors, whose sum is σ = 362794723200. Its totient is φ = 18521653248.

The previous prime is 89172873709. The next prime is 89172873721. The reversal of 89172873720 is 2737827198.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89172873721) 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 95 ways as a sum of consecutive naturals, for example, 1206472 + ... + 1278248.

It is an arithmetic number, because the mean of its divisors is an integer number (944777925).

Almost surely, 2^89172873720 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 89172873720, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (181397361600).

89172873720 is an abundant number, since it is smaller than the sum of its proper divisors (273621849480).

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

89172873720 is a wasteful number, since it uses less digits than its factorization.

89172873720 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71847 (or 71840 counting only the distinct ones).

The product of its (nonzero) digits is 2370816, while the sum is 54.

The spelling of 89172873720 in words is "eighty-nine billion, one hundred seventy-two million, eight hundred seventy-three thousand, seven hundred twenty".