228777755005 has 4 divisors (see below), whose sum is σ = 274533306012. Its totient is φ = 183022204000.

The previous prime is 228777754981. The next prime is 228777755009. The reversal of 228777755005 is 500557777822.

228777755005 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It can be written as a sum of positive squares in 2 ways, for example, as 180165442681 + 48612312324 = 424459^2 + 220482^2 .

It is not a de Polignac number, because 228777755005 - 2⁵ = 228777754973 is a prime.

It is a super-2 number, since 2×228777755005² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (228777755009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22877775496 + ... + 22877775505.

It is an arithmetic number, because the mean of its divisors is an integer number (68633326503).

Almost surely, 2^228777755005 is an apocalyptic number.

It is an amenable number.

228777755005 is a deficient number, since it is larger than the sum of its proper divisors (45755551007).

228777755005 is an equidigital number, since it uses as much as digits as its factorization.

228777755005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45755551006.

The product of its (nonzero) digits is 9604000, while the sum is 55.

The spelling of 228777755005 in words is "two hundred twenty-eight billion, seven hundred seventy-seven million, seven hundred fifty-five thousand, five".