22154320406 has 16 divisors (see below), whose sum is σ = 36716112864. Its totient is φ = 9972276864.

The previous prime is 22154320343. The next prime is 22154320417. The reversal of 22154320406 is 60402345122.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 14164385 + ... + 14165948.

It is an arithmetic number, because the mean of its divisors is an integer number (2294757054).

Almost surely, 2^22154320406 is an apocalyptic number.

22154320406 is a deficient number, since it is larger than the sum of its proper divisors (14561792458).

22154320406 is a wasteful number, since it uses less digits than its factorization.

22154320406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28330375.

The product of its (nonzero) digits is 11520, while the sum is 29.

Adding to 22154320406 its reverse (60402345122), we get a palindrome (82556665528).

The spelling of 22154320406 in words is "twenty-two billion, one hundred fifty-four million, three hundred twenty thousand, four hundred six".