22224361778 has 4 divisors (see below), whose sum is σ = 33336542670. Its totient is φ = 11112180888.

The previous prime is 22224361763. The next prime is 22224361811. The reversal of 22224361778 is 87716342222.

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

It can be written as a sum of positive squares in only one way, i.e., 22021669609 + 202692169 = 148397^2 + 14237^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5556090443 + ... + 5556090446.

Almost surely, 2^22224361778 is an apocalyptic number.

22224361778 is a deficient number, since it is larger than the sum of its proper divisors (11112180892).

22224361778 is a wasteful number, since it uses less digits than its factorization.

22224361778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11112180891.

The product of its digits is 451584, while the sum is 44.

The spelling of 22224361778 in words is "twenty-two billion, two hundred twenty-four million, three hundred sixty-one thousand, seven hundred seventy-eight".