85305533280 has 96 divisors (see below), whose sum is σ = 293140850688. Its totient is φ = 20680128000.

The previous prime is 85305533251. The next prime is 85305533311. The reversal of 85305533280 is 8233550358.

It is a tau number, because it is divible by the number of its divisors (96).

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, 8072896 + ... + 8083455.

It is an arithmetic number, because the mean of its divisors is an integer number (3053550528).

Almost surely, 2^85305533280 is an apocalyptic number.

85305533280 is a gapful number since it is divisible by the number (80) formed by its first and last digit.

It is an amenable number.

85305533280 is an abundant number, since it is smaller than the sum of its proper divisors (207835317408).

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

85305533280 is a wasteful number, since it uses less digits than its factorization.

85305533280 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16156380 (or 16156372 counting only the distinct ones).

The product of its (nonzero) digits is 432000, while the sum is 42.

The spelling of 85305533280 in words is "eighty-five billion, three hundred five million, five hundred thirty-three thousand, two hundred eighty".