222687300816 has 50 divisors (see below), whose sum is σ = 644521659122. Its totient is φ = 74229099840.

The previous prime is 222687300757. The next prime is 222687300817. The reversal of 222687300816 is 618003786222.

222687300816 is a `hidden beast` number, since 2 + 2 + 268 + 7 + 300 + 81 + 6 = 666.

It can be written as a sum of positive squares in only one way, i.e., 186966300816 + 35721000000 = 432396^2 + 189000^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (222687300817) by changing a digit.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 85912015 + ... + 85914606.

Almost surely, 2^222687300816 is an apocalyptic number.

It is an amenable number.

222687300816 is an abundant number, since it is smaller than the sum of its proper divisors (421834358306).

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

222687300816 is a wasteful number, since it uses less digits than its factorization.

222687300816 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 171826641 (or 171826626 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 45.

The spelling of 222687300816 in words is "two hundred twenty-two billion, six hundred eighty-seven million, three hundred thousand, eight hundred sixteen".