228442405081 has 6 divisors (see below), whose sum is σ = 251097850346. Its totient is φ = 207674913600.

The previous prime is 228442405067. The next prime is 228442405111. The reversal of 228442405081 is 180504244822.

228442405081 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 166940885056 + 61501520025 = 408584^2 + 247995^2 .

It is not a de Polignac number, because 228442405081 - 2³³ = 219852470489 is a prime.

It is a super-2 number, since 2×228442405081² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (228442405781) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 943976760 + ... + 943977001.

Almost surely, 2^228442405081 is an apocalyptic number.

It is an amenable number.

228442405081 is a deficient number, since it is larger than the sum of its proper divisors (22655445265).

228442405081 is a wasteful number, since it uses less digits than its factorization.

228442405081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1887953783 (or 1887953772 counting only the distinct ones).

The product of its (nonzero) digits is 163840, while the sum is 40.

The spelling of 228442405081 in words is "two hundred twenty-eight billion, four hundred forty-two million, four hundred five thousand, eighty-one".