21743714428 has 24 divisors (see below), whose sum is σ = 38467889712. Its totient is φ = 10753463424.

The previous prime is 21743714407. The next prime is 21743714431. The reversal of 21743714428 is 82441734712.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 80175 + ... + 223417.

It is an arithmetic number, because the mean of its divisors is an integer number (1602828738).

Almost surely, 2^21743714428 is an apocalyptic number.

It is an amenable number.

21743714428 is a deficient number, since it is larger than the sum of its proper divisors (16724175284).

21743714428 is a wasteful number, since it uses less digits than its factorization.

21743714428 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143661 (or 143659 counting only the distinct ones).

The product of its digits is 301056, while the sum is 43.

The spelling of 21743714428 in words is "twenty-one billion, seven hundred forty-three million, seven hundred fourteen thousand, four hundred twenty-eight".