228183638561 has 8 divisors (see below), whose sum is σ = 228352698600. Its totient is φ = 228014628480.

The previous prime is 228183638513. The next prime is 228183638569. The reversal of 228183638561 is 165836381822.

It can be written as a sum of positive squares in 4 ways, for example, as 111919687936 + 116263950625 = 334544^2 + 340975^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228183638561 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228183638569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16038431 + ... + 16052651.

It is an arithmetic number, because the mean of its divisors is an integer number (28544087325).

Almost surely, 2^228183638561 is an apocalyptic number.

It is an amenable number.

228183638561 is a deficient number, since it is larger than the sum of its proper divisors (169060039).

228183638561 is a wasteful number, since it uses less digits than its factorization.

228183638561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24979.

The product of its digits is 3317760, while the sum is 53.

The spelling of 228183638561 in words is "two hundred twenty-eight billion, one hundred eighty-three million, six hundred thirty-eight thousand, five hundred sixty-one".