8533781872 has 40 divisors (see below), whose sum is σ = 20614073472. Its totient is φ = 3324849600.

The previous prime is 8533781797. The next prime is 8533781899. The reversal of 8533781872 is 2781873358.

It is a happy number.

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 7 ways as a sum of consecutive naturals, for example, 3462154 + ... + 3464617.

Almost surely, 2^8533781872 is an apocalyptic number.

It is an amenable number.

8533781872 is an abundant number, since it is smaller than the sum of its proper divisors (12080291600).

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

8533781872 is a wasteful number, since it uses less digits than its factorization.

8533781872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6926797 (or 6926791 counting only the distinct ones).

The product of its digits is 2257920, while the sum is 52.

The square root of 8533781872 is about 92378.4708251874. The cubic root of 8533781872 is about 2043.5276231942.

Multiplying 8533781872 by its sum of digits (52), we get a palindrome (443756657344).

The spelling of 8533781872 in words is "eight billion, five hundred thirty-three million, seven hundred eighty-one thousand, eight hundred seventy-two".