89709261920 has 96 divisors (see below), whose sum is σ = 213203340000. Its totient is φ = 35670122496.

The previous prime is 89709261913. The next prime is 89709261937. The reversal of 89709261920 is 2916290798.

It is a congruent number.

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, 21474872 + ... + 21479048.

It is an arithmetic number, because the mean of its divisors is an integer number (2220868125).

Almost surely, 2^89709261920 is an apocalyptic number.

89709261920 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 89709261920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106601670000).

89709261920 is an abundant number, since it is smaller than the sum of its proper divisors (123494078080).

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

89709261920 is a wasteful number, since it uses less digits than its factorization.

89709261920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4960 (or 4952 counting only the distinct ones).

The product of its (nonzero) digits is 979776, while the sum is 53.

The spelling of 89709261920 in words is "eighty-nine billion, seven hundred nine million, two hundred sixty-one thousand, nine hundred twenty".