21400413304 has 16 divisors (see below), whose sum is σ = 40150861920. Its totient is φ = 10693516800.

The previous prime is 21400413269. The next prime is 21400413311. The reversal of 21400413304 is 40331400412.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 822624 + ... + 848239.

It is an arithmetic number, because the mean of its divisors is an integer number (2509428870).

Almost surely, 2^21400413304 is an apocalyptic number.

It is an amenable number.

21400413304 is a deficient number, since it is larger than the sum of its proper divisors (18750448616).

21400413304 is a wasteful number, since it uses less digits than its factorization.

21400413304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1672470 (or 1672466 counting only the distinct ones).

The product of its (nonzero) digits is 1152, while the sum is 22.

Adding to 21400413304 its reverse (40331400412), we get a palindrome (61731813716).

The spelling of 21400413304 in words is "twenty-one billion, four hundred million, four hundred thirteen thousand, three hundred four".