227778322128 has 40 divisors (see below), whose sum is σ = 672488380608. Its totient is φ = 65079520512.

The previous prime is 227778322111. The next prime is 227778322157. The reversal of 227778322128 is 821223877722.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 338955501 + ... + 338956172.

Almost surely, 2^227778322128 is an apocalyptic number.

227778322128 is a gapful number since it is divisible by the number (28) formed by its first and last digit.

It is an amenable number.

227778322128 is an abundant number, since it is smaller than the sum of its proper divisors (444710058480).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

227778322128 is a wasteful number, since it uses less digits than its factorization.

227778322128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 677911691 (or 677911685 counting only the distinct ones).

The product of its digits is 2107392, while the sum is 51.

The spelling of 227778322128 in words is "two hundred twenty-seven billion, seven hundred seventy-eight million, three hundred twenty-two thousand, one hundred twenty-eight".