20424432999 has 8 divisors (see below), whose sum is σ = 27233308912. Its totient is φ = 13615922880.

The previous prime is 20424432991. The next prime is 20424433039. The reversal of 20424432999 is 99923442402.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 20424432999 - 2³ = 20424432991 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 (20424432991) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 90627 + ... + 221499.

It is an arithmetic number, because the mean of its divisors is an integer number (3404163614).

Almost surely, 2^20424432999 is an apocalyptic number.

20424432999 is a deficient number, since it is larger than the sum of its proper divisors (6808875913).

20424432999 is a wasteful number, since it uses less digits than its factorization.

20424432999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182897.

The product of its (nonzero) digits is 1119744, while the sum is 48.

The spelling of 20424432999 in words is "twenty billion, four hundred twenty-four million, four hundred thirty-two thousand, nine hundred ninety-nine".