21404450314360 has 64 divisors (see below), whose sum is σ = 48202603891200. Its totient is φ = 8554210128000.

The previous prime is 21404450314339. The next prime is 21404450314519. The reversal of 21404450314360 is 6341305440412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 517607685 + ... + 517649035.

It is an arithmetic number, because the mean of its divisors is an integer number (753165685800).

Almost surely, 2^{21404450314360} is an apocalyptic number.

21404450314360 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

21404450314360 is an abundant number, since it is smaller than the sum of its proper divisors (26798153576840).

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

21404450314360 is a wasteful number, since it uses less digits than its factorization.

21404450314360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52492 (or 52488 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 37.

Adding to 21404450314360 its reverse (6341305440412), we get a palindrome (27745755754772).

The spelling of 21404450314360 in words is "twenty-one trillion, four hundred four billion, four hundred fifty million, three hundred fourteen thousand, three hundred sixty".