85521885480 has 128 divisors (see below), whose sum is σ = 285329520000. Its totient is φ = 22785311232.

The previous prime is 85521885467. The next prime is 85521885487. The reversal of 85521885480 is 8458812558.

85521885480 is a `hidden beast` number, since 8 + 552 + 1 + 8 + 8 + 5 + 4 + 80 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is not an unprimeable number, because it can be changed into a prime (85521885487) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1184251 + ... + 1254389.

It is an arithmetic number, because the mean of its divisors is an integer number (2229136875).

Almost surely, 2^85521885480 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 85521885480, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (142664760000).

85521885480 is an abundant number, since it is smaller than the sum of its proper divisors (199807634520).

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

85521885480 is a wasteful number, since it uses less digits than its factorization.

85521885480 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71288 (or 71278 counting only the distinct ones).

The product of its (nonzero) digits is 4096000, while the sum is 54.

The spelling of 85521885480 in words is "eighty-five billion, five hundred twenty-one million, eight hundred eighty-five thousand, four hundred eighty".