21411332304 has 20 divisors (see below), whose sum is σ = 55312608576. Its totient is φ = 7137110752.

The previous prime is 21411332281. The next prime is 21411332311. The reversal of 21411332304 is 40323311412.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (24).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 223034664 + ... + 223034759.

Almost surely, 2^21411332304 is an apocalyptic number.

21411332304 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

21411332304 is an abundant number, since it is smaller than the sum of its proper divisors (33901276272).

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

21411332304 is a wasteful number, since it uses less digits than its factorization.

21411332304 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 446069434 (or 446069428 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 24.

Adding to 21411332304 its reverse (40323311412), we get a palindrome (61734643716).

The spelling of 21411332304 in words is "twenty-one billion, four hundred eleven million, three hundred thirty-two thousand, three hundred four".