89485505520 has 80 divisors (see below), whose sum is σ = 281545491840. Its totient is φ = 23506636032.

The previous prime is 89485505513. The next prime is 89485505521. The reversal of 89485505520 is 2550558498.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (89485505521) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2766430 + ... + 2798589.

It is an arithmetic number, because the mean of its divisors is an integer number (3519318648).

Almost surely, 2^89485505520 is an apocalyptic number.

89485505520 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

89485505520 is an abundant number, since it is smaller than the sum of its proper divisors (192059986320).

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

89485505520 is a wasteful number, since it uses less digits than its factorization.

89485505520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5565102 (or 5565096 counting only the distinct ones).

The product of its (nonzero) digits is 2880000, while the sum is 51.

The spelling of 89485505520 in words is "eighty-nine billion, four hundred eighty-five million, five hundred five thousand, five hundred twenty".