228445738855 has 4 divisors (see below), whose sum is σ = 274134886632. Its totient is φ = 182756591080.

The previous prime is 228445738793. The next prime is 228445738861. The reversal of 228445738855 is 558837544822.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 558837544822 = 2 ⋅279418772411.

It is not a de Polignac number, because 228445738855 - 2¹¹ = 228445736807 is a prime.

It is a super-2 number, since 2×228445738855² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 228445738793 and 228445738802.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22844573881 + ... + 22844573890.

It is an arithmetic number, because the mean of its divisors is an integer number (68533721658).

Almost surely, 2^228445738855 is an apocalyptic number.

228445738855 is a deficient number, since it is larger than the sum of its proper divisors (45689147777).

228445738855 is an equidigital number, since it uses as much as digits as its factorization.

228445738855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45689147776.

The product of its digits is 86016000, while the sum is 61.

The spelling of 228445738855 in words is "two hundred twenty-eight billion, four hundred forty-five million, seven hundred thirty-eight thousand, eight hundred fifty-five".