222343656778 has 16 divisors (see below), whose sum is σ = 353143332360. Its totient is φ = 104629556736.

The previous prime is 222343656701. The next prime is 222343656823. The reversal of 222343656778 is 877656343222.

It can be written as a sum of positive squares in 4 ways, for example, as 191995577929 + 30348078849 = 438173^2 + 174207^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1870588 + ... + 1985896.

Almost surely, 2^222343656778 is an apocalyptic number.

222343656778 is a deficient number, since it is larger than the sum of its proper divisors (130799675582).

222343656778 is a wasteful number, since it uses less digits than its factorization.

222343656778 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 172041.

The product of its digits is 20321280, while the sum is 55.

The spelling of 222343656778 in words is "two hundred twenty-two billion, three hundred forty-three million, six hundred fifty-six thousand, seven hundred seventy-eight".