228917575681 has 4 divisors (see below), whose sum is σ = 228962056752. Its totient is φ = 228873094612.

The previous prime is 228917575669. The next prime is 228917575709. The reversal of 228917575681 is 186575719822.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 228917575681 - 2⁷ = 228917575553 is a prime.

It is a super-2 number, since 2×228917575681² (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 (228917575661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22232815 + ... + 22243108.

It is an arithmetic number, because the mean of its divisors is an integer number (57240514188).

Almost surely, 2^228917575681 is an apocalyptic number.

It is an amenable number.

228917575681 is a deficient number, since it is larger than the sum of its proper divisors (44481071).

228917575681 is an equidigital number, since it uses as much as digits as its factorization.

228917575681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44481070.

The product of its digits is 16934400, while the sum is 61.

The spelling of 228917575681 in words is "two hundred twenty-eight billion, nine hundred seventeen million, five hundred seventy-five thousand, six hundred eighty-one".