228165678293 has 4 divisors (see below), whose sum is σ = 260760775200. Its totient is φ = 195570581388.

The previous prime is 228165678287. The next prime is 228165678329. The reversal of 228165678293 is 392876561822.

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 not a de Polignac number, because 228165678293 - 2⁴ = 228165678277 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228165678193) 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, 16297548443 + ... + 16297548456.

It is an arithmetic number, because the mean of its divisors is an integer number (65190193800).

Almost surely, 2^228165678293 is an apocalyptic number.

It is an amenable number.

228165678293 is a deficient number, since it is larger than the sum of its proper divisors (32595096907).

228165678293 is an equidigital number, since it uses as much as digits as its factorization.

228165678293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 32595096906.

The product of its digits is 17418240, while the sum is 59.

The spelling of 228165678293 in words is "two hundred twenty-eight billion, one hundred sixty-five million, six hundred seventy-eight thousand, two hundred ninety-three".