228167971555 has 4 divisors (see below), whose sum is σ = 273801565872. Its totient is φ = 182534377240.

The previous prime is 228167971553. The next prime is 228167971561. The reversal of 228167971555 is 555179761822.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 228167971555 - 2¹ = 228167971553 is a prime.

It is a super-3 number, since 3×228167971555³ (a number of 35 digits) contains 333 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 228167971555.

It is not an unprimeable number, because it can be changed into a prime (228167971553) 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, 22816797151 + ... + 22816797160.

It is an arithmetic number, because the mean of its divisors is an integer number (68450391468).

Almost surely, 2^228167971555 is an apocalyptic number.

228167971555 is a deficient number, since it is larger than the sum of its proper divisors (45633594317).

228167971555 is an equidigital number, since it uses as much as digits as its factorization.

228167971555 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45633594316.

The product of its digits is 10584000, while the sum is 58.

The spelling of 228167971555 in words is "two hundred twenty-eight billion, one hundred sixty-seven million, nine hundred seventy-one thousand, five hundred fifty-five".