228248616961 has 4 divisors (see below), whose sum is σ = 241675006212. Its totient is φ = 214822227712.

The previous prime is 228248616923. The next prime is 228248616983. The reversal of 228248616961 is 169616842822.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 210547911025 + 17700705936 = 458855^2 + 133044^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-228248616961 is a prime.

It is a super-2 number, since 2×228248616961² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (228248616901) 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 3 ways as a sum of consecutive naturals, for example, 6713194600 + ... + 6713194633.

It is an arithmetic number, because the mean of its divisors is an integer number (60418751553).

Almost surely, 2^228248616961 is an apocalyptic number.

It is an amenable number.

228248616961 is a deficient number, since it is larger than the sum of its proper divisors (13426389251).

228248616961 is a wasteful number, since it uses less digits than its factorization.

228248616961 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13426389250.

The product of its digits is 3981312, while the sum is 55.

The spelling of 228248616961 in words is "two hundred twenty-eight billion, two hundred forty-eight million, six hundred sixteen thousand, nine hundred sixty-one".