228165722583642 has 24 divisors (see below), whose sum is σ = 497216632457844. Its totient is φ = 75615615190464.

The previous prime is 228165722583641. The next prime is 228165722583661. The reversal of 228165722583642 is 246385227561822.

228165722583642 is a `hidden beast` number, since 2 + 2 + 8 + 1 + 6 + 5 + 7 + 2 + 2 + 583 + 6 + 42 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 156911172963561 + 71254549620081 = 12526419^2 + 8441241^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 228165722583642.

It is not an unprimeable number, because it can be changed into a prime (228165722583641) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 36635469363 + ... + 36635475590.

Almost surely, 2^{228165722583642} is an apocalyptic number.

228165722583642 is an abundant number, since it is smaller than the sum of its proper divisors (269050909874202).

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

228165722583642 is a wasteful number, since it uses less digits than its factorization.

228165722583642 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73270945134 (or 73270945131 counting only the distinct ones).

The product of its digits is 154828800, while the sum is 63.

The spelling of 228165722583642 in words is "two hundred twenty-eight trillion, one hundred sixty-five billion, seven hundred twenty-two million, five hundred eighty-three thousand, six hundred forty-two".