222778685268 has 36 divisors (see below), whose sum is σ = 571540016320. Its totient is φ = 73151209296.

The previous prime is 222778685249. The next prime is 222778685273. The reversal of 222778685268 is 862586877222.

222778685268 is a `hidden beast` number, since 2 + 2 + 27 + 7 + 86 + 8 + 526 + 8 = 666.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Smith number, since the sum of its digits (63) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 46178908 + ... + 46183731.

Almost surely, 2^222778685268 is an apocalyptic number.

It is an amenable number.

222778685268 is an abundant number, since it is smaller than the sum of its proper divisors (348761331052).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

222778685268 is a wasteful number, since it uses less digits than its factorization.

222778685268 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 92362716 (or 92362711 counting only the distinct ones).

The product of its digits is 72253440, while the sum is 63.

The spelling of 222778685268 in words is "two hundred twenty-two billion, seven hundred seventy-eight million, six hundred eighty-five thousand, two hundred sixty-eight".