222165781362 has 162 divisors, whose sum is σ = 571725302733. Its totient is φ = 62168103648.

The previous prime is 222165781339. The next prime is 222165781373. The reversal of 222165781362 is 263187561222.

222165781362 is a `hidden beast` number, since 2 + 2 + 2 + 1 + 6 + 578 + 13 + 62 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 166163032161 + 56002749201 = 407631^2 + 236649^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=333291.

It is an unprimeable number.

It is a polite number, since it can be written in 80 ways as a sum of consecutive naturals, for example, 825894964 + ... + 825895232.

Almost surely, 2^222165781362 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 222165781362

222165781362 is an abundant number, since it is smaller than the sum of its proper divisors (349559521371).

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

222165781362 is an equidigital number, since it uses as much as digits as its factorization.

222165781362 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 678 (or 340 counting only the distinct ones).

The product of its digits is 483840, while the sum is 45.

The spelling of 222165781362 in words is "two hundred twenty-two billion, one hundred sixty-five million, seven hundred eighty-one thousand, three hundred sixty-two".