181115461222228 has 24 divisors (see below), whose sum is σ = 342539108259488. Its totient is φ = 83296374113376.

The previous prime is 181115461222187. The next prime is 181115461222249. The reversal of 181115461222228 is 822222164511181.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6153677226 + ... + 6153706657.

Almost surely, 2^{181115461222228} is an apocalyptic number.

It is an amenable number.

181115461222228 is a deficient number, since it is larger than the sum of its proper divisors (161423647037260).

181115461222228 is a wasteful number, since it uses less digits than its factorization.

181115461222228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12307384183 (or 12307384181 counting only the distinct ones).

The product of its digits is 245760, while the sum is 46.

The spelling of 181115461222228 in words is "one hundred eighty-one trillion, one hundred fifteen billion, four hundred sixty-one million, two hundred twenty-two thousand, two hundred twenty-eight".