8521778112 has 56 divisors (see below), whose sum is σ = 22555693776. Its totient is φ = 2839523328.

The previous prime is 8521778063. The next prime is 8521778119. The reversal of 8521778112 is 2118771258.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8521778119) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 629398 + ... + 642794.

It is an arithmetic number, because the mean of its divisors is an integer number (402780246).

Almost surely, 2^8521778112 is an apocalyptic number.

It is an amenable number.

8521778112 is an abundant number, since it is smaller than the sum of its proper divisors (14033915664).

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

8521778112 is a wasteful number, since it uses less digits than its factorization.

8521778112 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16725 (or 16715 counting only the distinct ones).

The product of its digits is 62720, while the sum is 42.

The square root of 8521778112 is about 92313.4774125642. The cubic root of 8521778112 is about 2042.5690202383.

The spelling of 8521778112 in words is "eight billion, five hundred twenty-one million, seven hundred seventy-eight thousand, one hundred twelve".