85604428800 has 1056 divisors, whose sum is σ = 349673452800. Its totient is φ = 20603289600.

The previous prime is 85604428783. The next prime is 85604428813. The reversal of 85604428800 is 882440658.

85604428800 is a `hidden beast` number, since 8 + 560 + 4 + 4 + 2 + 8 + 80 + 0 = 666.

It is a tau number, because it is divible by the number of its divisors (1056).

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 615859131 + ... + 615859269.

Almost surely, 2^85604428800 is an apocalyptic number.

85604428800 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 85604428800, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (174836726400).

85604428800 is an abundant number, since it is smaller than the sum of its proper divisors (264069024000).

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

85604428800 is a wasteful number, since it uses less digits than its factorization.

85604428800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 201 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 491520, while the sum is 45.

The spelling of 85604428800 in words is "eighty-five billion, six hundred four million, four hundred twenty-eight thousand, eight hundred".