21324610000 has 50 divisors (see below), whose sum is σ = 51629037482. Its totient is φ = 8529840000.

The previous prime is 21324609961. The next prime is 21324610001. The reversal of 21324610000 is 1642312.

It can be written as a sum of positive squares in 5 ways, for example, as 6527347264 + 14797262736 = 80792^2 + 121644^2 .

It is a tau number, because it is divible by the number of its divisors (50).

It is a self number, because there is not a number n which added to its sum of digits gives 21324610000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21324610001) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 1056231 + ... + 1076230.

Almost surely, 2^21324610000 is an apocalyptic number.

21324610000 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21324610000 is an abundant number, since it is smaller than the sum of its proper divisors (30304427482).

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

21324610000 is an equidigital number, since it uses as much as digits as its factorization.

21324610000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2132489 (or 2132468 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 19.

The spelling of 21324610000 in words is "twenty-one billion, three hundred twenty-four million, six hundred ten thousand".