222855561728 has 90 divisors (see below), whose sum is σ = 460787617917. Its totient is φ = 107673108480.

The previous prime is 222855561667. The next prime is 222855561763. The reversal of 222855561728 is 827165558222.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in 2 ways, for example, as 215994421504 + 6861140224 = 464752^2 + 82832^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=333808.

It is a self number, because there is not a number n which added to its sum of digits gives 222855561728.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 331137200 + ... + 331137872.

Almost surely, 2^222855561728 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222855561728

222855561728 is an abundant number, since it is smaller than the sum of its proper divisors (237932056189).

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

222855561728 is an frugal number, since it uses more digits than its factorization.

222855561728 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1426 (or 706 counting only the distinct ones).

The product of its digits is 5376000, while the sum is 53.

The spelling of 222855561728 in words is "two hundred twenty-two billion, eight hundred fifty-five million, five hundred sixty-one thousand, seven hundred twenty-eight".