222447666836 has 6 divisors (see below), whose sum is σ = 389283416970. Its totient is φ = 111223833416.

The previous prime is 222447666787. The next prime is 222447666851. The reversal of 222447666836 is 638666744222.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 212456464900 + 9991201936 = 460930^2 + 99956^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 27805958351 + ... + 27805958358.

It is an arithmetic number, because the mean of its divisors is an integer number (64880569495).

Almost surely, 2^222447666836 is an apocalyptic number.

It is an amenable number.

222447666836 is a deficient number, since it is larger than the sum of its proper divisors (166835750134).

222447666836 is a wasteful number, since it uses less digits than its factorization.

222447666836 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55611916713 (or 55611916711 counting only the distinct ones).

The product of its digits is 27869184, while the sum is 56.

The spelling of 222447666836 in words is "two hundred twenty-two billion, four hundred forty-seven million, six hundred sixty-six thousand, eight hundred thirty-six".