21924748993 has 16 divisors (see below), whose sum is σ = 25689481600. Its totient is φ = 18703515600.

The previous prime is 21924748991. The next prime is 21924748997. The reversal of 21924748993 is 39984742912.

It is not a de Polignac number, because 21924748993 - 2¹ = 21924748991 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (21924748991) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 79098 + ... + 223843.

It is an arithmetic number, because the mean of its divisors is an integer number (1605592600).

Almost surely, 2^21924748993 is an apocalyptic number.

It is an amenable number.

21924748993 is a deficient number, since it is larger than the sum of its proper divisors (3764732607).

21924748993 is an equidigital number, since it uses as much as digits as its factorization.

21924748993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 303173 (or 303159 counting only the distinct ones).

The product of its digits is 7838208, while the sum is 58.

The spelling of 21924748993 in words is "twenty-one billion, nine hundred twenty-four million, seven hundred forty-eight thousand, nine hundred ninety-three".