228173265681 has 8 divisors (see below), whose sum is σ = 304335831360. Its totient is φ = 152063105232.

The previous prime is 228173265659. The next prime is 228173265709. The reversal of 228173265681 is 186562371822.

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

It is not a de Polignac number, because 228173265681 - 2⁷ = 228173265553 is a prime.

It is a super-2 number, since 2×228173265681² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (228173265781) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 13091146 + ... + 13108563.

It is an arithmetic number, because the mean of its divisors is an integer number (38041978920).

Almost surely, 2^228173265681 is an apocalyptic number.

It is an amenable number.

228173265681 is a deficient number, since it is larger than the sum of its proper divisors (76162565679).

228173265681 is a wasteful number, since it uses less digits than its factorization.

228173265681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26202615.

The product of its digits is 1935360, while the sum is 51.

The spelling of 228173265681 in words is "two hundred twenty-eight billion, one hundred seventy-three million, two hundred sixty-five thousand, six hundred eighty-one".