22400223550 has 12 divisors (see below), whose sum is σ = 41664415896. Its totient is φ = 8960089400.

The previous prime is 22400223511. The next prime is 22400223557. The reversal of 22400223550 is 5532200422.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (25).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22400223557) by changing a digit.

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 in 5 ways as a sum of consecutive naturals, for example, 224002186 + ... + 224002285.

It is an arithmetic number, because the mean of its divisors is an integer number (3472034658).

Almost surely, 2^22400223550 is an apocalyptic number.

22400223550 is a deficient number, since it is larger than the sum of its proper divisors (19264192346).

22400223550 is a wasteful number, since it uses less digits than its factorization.

22400223550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448004483 (or 448004478 counting only the distinct ones).

The product of its (nonzero) digits is 4800, while the sum is 25.

Adding to 22400223550 its reverse (5532200422), we get a palindrome (27932423972).

The spelling of 22400223550 in words is "twenty-two billion, four hundred million, two hundred twenty-three thousand, five hundred fifty".