213821768562 has 8 divisors (see below), whose sum is σ = 427643537136. Its totient is φ = 71273922852.

The previous prime is 213821768561. The next prime is 213821768591. The reversal of 213821768562 is 265867128312.

It is a sphenic number, since it is the product of 3 distinct primes.

213821768562 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (213821768561) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 17818480708 + ... + 17818480719.

It is an arithmetic number, because the mean of its divisors is an integer number (53455442142).

Almost surely, 2^213821768562 is an apocalyptic number.

213821768562 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

213821768562 is a wasteful number, since it uses less digits than its factorization.

213821768562 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35636961432.

The product of its digits is 1935360, while the sum is 51.

The spelling of 213821768562 in words is "two hundred thirteen billion, eight hundred twenty-one million, seven hundred sixty-eight thousand, five hundred sixty-two".