23424541821 has 16 divisors (see below), whose sum is σ = 34724289600. Its totient is φ = 15606792144.

The previous prime is 23424541813. The next prime is 23424541823. The reversal of 23424541821 is 12814542432.

23424541821 is a `hidden beast` number, since 2 + 3 + 424 + 54 + 182 + 1 = 666.

It is not a de Polignac number, because 23424541821 - 2³ = 23424541813 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (23424541823) 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, 220791 + ... + 309188.

It is an arithmetic number, because the mean of its divisors is an integer number (2170268100).

Almost surely, 2^23424541821 is an apocalyptic number.

It is an amenable number.

23424541821 is a deficient number, since it is larger than the sum of its proper divisors (11299747779).

23424541821 is a wasteful number, since it uses less digits than its factorization.

23424541821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 531625 (or 531619 counting only the distinct ones).

The product of its digits is 61440, while the sum is 36.

The spelling of 23424541821 in words is "twenty-three billion, four hundred twenty-four million, five hundred forty-one thousand, eight hundred twenty-one".