8643512850 has 48 divisors (see below), whose sum is σ = 24498187968. Its totient is φ = 1975659840.

The previous prime is 8643512849. The next prime is 8643512879. The reversal of 8643512850 is 582153468.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4114909 + ... + 4117008.

It is an arithmetic number, because the mean of its divisors is an integer number (510378916).

Almost surely, 2^8643512850 is an apocalyptic number.

8643512850 is an abundant number, since it is smaller than the sum of its proper divisors (15854675118).

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

8643512850 is a wasteful number, since it uses less digits than its factorization.

8643512850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8231939 (or 8231934 counting only the distinct ones).

The product of its (nonzero) digits is 230400, while the sum is 42.

The square root of 8643512850 is about 92970.4945130443. The cubic root of 8643512850 is about 2052.2491950442.

The spelling of 8643512850 in words is "eight billion, six hundred forty-three million, five hundred twelve thousand, eight hundred fifty".