21741224732 has 6 divisors (see below), whose sum is σ = 38047143288. Its totient is φ = 10870612364.

The previous prime is 21741224723. The next prime is 21741224749. The reversal of 21741224732 is 23742214712.

It is a junction number, because it is equal to n+sod(n) for n = 21741224692 and 21741224701.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2717653088 + ... + 2717653095.

It is an arithmetic number, because the mean of its divisors is an integer number (6341190548).

Almost surely, 2^21741224732 is an apocalyptic number.

It is an amenable number.

21741224732 is a deficient number, since it is larger than the sum of its proper divisors (16305918556).

21741224732 is a wasteful number, since it uses less digits than its factorization.

21741224732 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5435306187 (or 5435306185 counting only the distinct ones).

The product of its digits is 37632, while the sum is 35.

The spelling of 21741224732 in words is "twenty-one billion, seven hundred forty-one million, two hundred twenty-four thousand, seven hundred thirty-two".