22431424438 has 4 divisors (see below), whose sum is σ = 33647136660. Its totient is φ = 11215712218.

The previous prime is 22431424427. The next prime is 22431424439. The reversal of 22431424438 is 83442413422.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 83442413422 = 2 ⋅41721206711.

It is a junction number, because it is equal to n+sod(n) for n = 22431424397 and 22431424406.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22431424439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5607856108 + ... + 5607856111.

It is an arithmetic number, because the mean of its divisors is an integer number (8411784165).

Almost surely, 2^22431424438 is an apocalyptic number.

22431424438 is a deficient number, since it is larger than the sum of its proper divisors (11215712222).

22431424438 is a wasteful number, since it uses less digits than its factorization.

22431424438 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11215712221.

The product of its digits is 147456, while the sum is 37.

The spelling of 22431424438 in words is "twenty-two billion, four hundred thirty-one million, four hundred twenty-four thousand, four hundred thirty-eight".