22354532447 has 4 divisors (see below), whose sum is σ = 24074111880. Its totient is φ = 20634953016.

The previous prime is 22354532429. The next prime is 22354532471. The reversal of 22354532447 is 74423545322.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 22354532447 - 2¹² = 22354528351 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22354532477) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 859789697 + ... + 859789722.

It is an arithmetic number, because the mean of its divisors is an integer number (6018527970).

Almost surely, 2^22354532447 is an apocalyptic number.

22354532447 is a deficient number, since it is larger than the sum of its proper divisors (1719579433).

22354532447 is a wasteful number, since it uses less digits than its factorization.

22354532447 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1719579432.

The product of its digits is 806400, while the sum is 41.

The spelling of 22354532447 in words is "twenty-two billion, three hundred fifty-four million, five hundred thirty-two thousand, four hundred forty-seven".