21324642312 has 32 divisors (see below), whose sum is σ = 53316036000. Its totient is φ = 7107623424.

The previous prime is 21324642301. The next prime is 21324642329.

21324642312 is nontrivially palindromic in base 10.

It is a nude number because it is divisible by every one of its digits.

It is a self number, because there is not a number n which added to its sum of digits gives 21324642312.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 333939 + ... + 392637.

It is an arithmetic number, because the mean of its divisors is an integer number (1666126125).

Almost surely, 2^21324642312 is an apocalyptic number.

It is an amenable number.

21324642312 is an abundant number, since it is smaller than the sum of its proper divisors (31991393688).

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

21324642312 is a wasteful number, since it uses less digits than its factorization.

21324642312 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 73845 (or 73841 counting only the distinct ones).

The product of its digits is 13824, while the sum is 30.

The spelling of 21324642312 in words is "twenty-one billion, three hundred twenty-four million, six hundred forty-two thousand, three hundred twelve".