85535453556 has 144 divisors (see below), whose sum is σ = 261755020800. Its totient is φ = 22990832640.

The previous prime is 85535453519. The next prime is 85535453557. The reversal of 85535453556 is 65535453558.

85535453556 is a `hidden beast` number, since 8 + 5 + 5 + 3 + 54 + 535 + 56 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (85535453557) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 18628821 + ... + 18633411.

It is an arithmetic number, because the mean of its divisors is an integer number (1817743200).

Almost surely, 2^85535453556 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 85535453556, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (130877510400).

85535453556 is an abundant number, since it is smaller than the sum of its proper divisors (176219567244).

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

85535453556 is a wasteful number, since it uses less digits than its factorization.

85535453556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8974 (or 8969 counting only the distinct ones).

The product of its digits is 27000000, while the sum is 54.

The spelling of 85535453556 in words is "eighty-five billion, five hundred thirty-five million, four hundred fifty-three thousand, five hundred fifty-six".