213500663800 has 96 divisors (see below), whose sum is σ = 498059059680. Its totient is φ = 85113497600.

The previous prime is 213500663791. The next prime is 213500663819. The reversal of 213500663800 is 8366005312.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 144159060 + ... + 144160540.

It is an arithmetic number, because the mean of its divisors is an integer number (5188115205).

Almost surely, 2^213500663800 is an apocalyptic number.

213500663800 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

213500663800 is an abundant number, since it is smaller than the sum of its proper divisors (284558395880).

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

213500663800 is a wasteful number, since it uses less digits than its factorization.

213500663800 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3433 (or 3424 counting only the distinct ones).

The product of its (nonzero) digits is 25920, while the sum is 34.

The spelling of 213500663800 in words is "two hundred thirteen billion, five hundred million, six hundred sixty-three thousand, eight hundred".