21743923528 has 16 divisors (see below), whose sum is σ = 42085013760. Its totient is φ = 10521253200.

The previous prime is 21743923493. The next prime is 21743923529. The reversal of 21743923528 is 82532934712.

It is not an unprimeable number, because it can be changed into a prime (21743923529) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 43838308 + ... + 43838803.

It is an arithmetic number, because the mean of its divisors is an integer number (2630313360).

Almost surely, 2^21743923528 is an apocalyptic number.

It is an amenable number.

21743923528 is a deficient number, since it is larger than the sum of its proper divisors (20341090232).

21743923528 is a wasteful number, since it uses less digits than its factorization.

21743923528 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 87677148 (or 87677144 counting only the distinct ones).

The product of its digits is 725760, while the sum is 46.

The spelling of 21743923528 in words is "twenty-one billion, seven hundred forty-three million, nine hundred twenty-three thousand, five hundred twenty-eight".