22444446778 has 16 divisors (see below), whose sum is σ = 36281881440. Its totient is φ = 10351699056.

The previous prime is 22444446769. The next prime is 22444446839. The reversal of 22444446778 is 87764444422.

It is a plaindrome in base 10.

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 in 7 ways as a sum of consecutive naturals, for example, 265368 + ... + 339571.

It is an arithmetic number, because the mean of its divisors is an integer number (2267617590).

Almost surely, 2^22444446778 is an apocalyptic number.

22444446778 is a deficient number, since it is larger than the sum of its proper divisors (13837434662).

22444446778 is a wasteful number, since it uses less digits than its factorization.

22444446778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 606381.

The product of its digits is 9633792, while the sum is 52.

The spelling of 22444446778 in words is "twenty-two billion, four hundred forty-four million, four hundred forty-six thousand, seven hundred seventy-eight".