12013728666228 has 48 divisors (see below), whose sum is σ = 32220728232000. Its totient is φ = 3866487385824.

The previous prime is 12013728666167. The next prime is 12013728666281. The reversal of 12013728666228 is 82266682731021.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1917897358 + ... + 1917903621.

It is an arithmetic number, because the mean of its divisors is an integer number (671265171500).

Almost surely, 2^{12013728666228} is an apocalyptic number.

12013728666228 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

12013728666228 is an abundant number, since it is smaller than the sum of its proper divisors (20206999565772).

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

12013728666228 is a wasteful number, since it uses less digits than its factorization.

12013728666228 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3835801021 (or 3835801013 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 12013728666228 in words is "twelve trillion, thirteen billion, seven hundred twenty-eight million, six hundred sixty-six thousand, two hundred twenty-eight".