21924576423 has 10 divisors (see below), whose sum is σ = 32751527864. Its totient is φ = 14616384228.

The previous prime is 21924576407. The next prime is 21924576461. The reversal of 21924576423 is 32467542912.

21924576423 is a `hidden beast` number, since 2 + 19 + 24 + 576 + 42 + 3 = 666.

It is not a de Polignac number, because 21924576423 - 2⁴ = 21924576407 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (21924576523) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 135336811 + ... + 135336972.

Almost surely, 2^21924576423 is an apocalyptic number.

21924576423 is a deficient number, since it is larger than the sum of its proper divisors (10826951441).

21924576423 is an equidigital number, since it uses as much as digits as its factorization.

21924576423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 270673795 (or 270673786 counting only the distinct ones).

The product of its digits is 725760, while the sum is 45.

The spelling of 21924576423 in words is "twenty-one billion, nine hundred twenty-four million, five hundred seventy-six thousand, four hundred twenty-three".