85455373788 has 96 divisors (see below), whose sum is σ = 233332377600. Its totient is φ = 26971926912.

The previous prime is 85455373763. The next prime is 85455373819. The reversal of 85455373788 is 88737355458.

85455373788 is a `hidden beast` number, since 8 + 5 + 4 + 553 + 7 + 3 + 78 + 8 = 666.

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 31 ways as a sum of consecutive naturals, for example, 4387720 + ... + 4407152.

It is an arithmetic number, because the mean of its divisors is an integer number (2430545600).

Almost surely, 2^85455373788 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 85455373788, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (116666188800).

85455373788 is an abundant number, since it is smaller than the sum of its proper divisors (147877003812).

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

85455373788 is a wasteful number, since it uses less digits than its factorization.

85455373788 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 21608 (or 21600 counting only the distinct ones).

The product of its digits is 112896000, while the sum is 63.

The spelling of 85455373788 in words is "eighty-five billion, four hundred fifty-five million, three hundred seventy-three thousand, seven hundred eighty-eight".