21324862206 has 36 divisors (see below), whose sum is σ = 48219450552. Its totient is φ = 6798284064.

The previous prime is 21324862187. The next prime is 21324862213. The reversal of 21324862206 is 60226842312.

21324862206 is a `hidden beast` number, since 2 + 1 + 3 + 24 + 8 + 622 + 0 + 6 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2967690 + ... + 2974866.

It is an arithmetic number, because the mean of its divisors is an integer number (1339429182).

Almost surely, 2^21324862206 is an apocalyptic number.

21324862206 is an abundant number, since it is smaller than the sum of its proper divisors (26894588346).

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

21324862206 is an frugal number, since it uses more digits than its factorization.

21324862206 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14385 (or 7205 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The spelling of 21324862206 in words is "twenty-one billion, three hundred twenty-four million, eight hundred sixty-two thousand, two hundred six".