21321514304 has 28 divisors (see below), whose sum is σ = 43674718848. Its totient is φ = 10316860800.

The previous prime is 21321514283. The next prime is 21321514309. The reversal of 21321514304 is 40341512312.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21321514309) 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 3 ways as a sum of consecutive naturals, for example, 5371382 + ... + 5375349.

Almost surely, 2^21321514304 is an apocalyptic number.

It is an amenable number.

21321514304 is an abundant number, since it is smaller than the sum of its proper divisors (22353204544).

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

21321514304 is a wasteful number, since it uses less digits than its factorization.

21321514304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10746774 (or 10746764 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 26.

The spelling of 21321514304 in words is "twenty-one billion, three hundred twenty-one million, five hundred fourteen thousand, three hundred four".