85481818452 has 30 divisors (see below), whose sum is σ = 223466359578. Its totient is φ = 28493939376.

The previous prime is 85481818391. The next prime is 85481818511. The reversal of 85481818452 is 25481818458.

85481818452 is a `hidden beast` number, since 8 + 5 + 4 + 8 + 181 + 8 + 452 = 666.

It can be written as a sum of positive squares in only one way, i.e., 84789286596 + 692531856 = 291186^2 + 26316^2 .

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 131916063 + ... + 131916710.

Almost surely, 2^85481818452 is an apocalyptic number.

It is an amenable number.

85481818452 is an abundant number, since it is smaller than the sum of its proper divisors (137984541126).

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

85481818452 is a wasteful number, since it uses less digits than its factorization.

85481818452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 263832789 (or 263832778 counting only the distinct ones).

The product of its digits is 3276800, while the sum is 54.

The spelling of 85481818452 in words is "eighty-five billion, four hundred eighty-one million, eight hundred eighteen thousand, four hundred fifty-two".