21043414512 has 60 divisors (see below), whose sum is σ = 59341946664. Its totient is φ = 6960919680.

The previous prime is 21043414501. The next prime is 21043414523. The reversal of 21043414512 is 21541434012.

21043414512 is a `hidden beast` number, since 2 + 104 + 3 + 41 + 4 + 512 = 666.

It is an interprime number because it is at equal distance from previous prime (21043414501) and next prime (21043414523).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 538903 + ... + 576630.

Almost surely, 2^21043414512 is an apocalyptic number.

It is an amenable number.

21043414512 is an abundant number, since it is smaller than the sum of its proper divisors (38298532152).

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

21043414512 is a wasteful number, since it uses less digits than its factorization.

21043414512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1115678 (or 1115669 counting only the distinct ones).

The product of its (nonzero) digits is 3840, while the sum is 27.

Adding to 21043414512 its reverse (21541434012), we get a palindrome (42584848524).

The spelling of 21043414512 in words is "twenty-one billion, forty-three million, four hundred fourteen thousand, five hundred twelve".