213564856584 has 32 divisors (see below), whose sum is σ = 534475991520. Its totient is φ = 71113105536.

The previous prime is 213564856543. The next prime is 213564856597. The reversal of 213564856584 is 485658465312.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4675549 + ... + 4721004.

It is an arithmetic number, because the mean of its divisors is an integer number (16702374735).

Almost surely, 2^213564856584 is an apocalyptic number.

213564856584 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

213564856584 is an abundant number, since it is smaller than the sum of its proper divisors (320911134936).

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

213564856584 is a wasteful number, since it uses less digits than its factorization.

213564856584 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9397509 (or 9397505 counting only the distinct ones).

The product of its digits is 27648000, while the sum is 57.

The spelling of 213564856584 in words is "two hundred thirteen billion, five hundred sixty-four million, eight hundred fifty-six thousand, five hundred eighty-four".