21300322432 has 32 divisors (see below), whose sum is σ = 42611846400. Its totient is φ = 10605584640.

The previous prime is 21300322429. The next prime is 21300322489. The reversal of 21300322432 is 23422300312.

It is a tau number, because it is divible by the number of its divisors (32).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 317544 + ... + 378727.

It is an arithmetic number, because the mean of its divisors is an integer number (1331620200).

Almost surely, 2^21300322432 is an apocalyptic number.

It is an amenable number.

21300322432 is an abundant number, since it is smaller than the sum of its proper divisors (21311523968).

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

21300322432 is an equidigital number, since it uses as much as digits as its factorization.

21300322432 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 696524 (or 696512 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 22.

Adding to 21300322432 its reverse (23422300312), we get a palindrome (44722622744).

The spelling of 21300322432 in words is "twenty-one billion, three hundred million, three hundred twenty-two thousand, four hundred thirty-two".