21743434712 has 16 divisors (see below), whose sum is σ = 40948542360. Its totient is φ = 10823823424.

The previous prime is 21743434703. The next prime is 21743434723.

21743434712 is nontrivially palindromic in base 10.

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, 5984813 + ... + 5988444.

Almost surely, 2^21743434712 is an apocalyptic number.

It is an amenable number.

21743434712 is a deficient number, since it is larger than the sum of its proper divisors (19205107648).

21743434712 is a wasteful number, since it uses less digits than its factorization.

21743434712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11973490 (or 11973486 counting only the distinct ones).

The product of its digits is 112896, while the sum is 38.

The spelling of 21743434712 in words is "twenty-one billion, seven hundred forty-three million, four hundred thirty-four thousand, seven hundred twelve".