1123181228928 has 128 divisors (see below), whose sum is σ = 3330363484800. Its totient is φ = 332442593280.

The previous prime is 1123181228857. The next prime is 1123181228933. The reversal of 1123181228928 is 8298221813211.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (128).

It is a Harshad number since it is a multiple of its sum of digits (48).

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, 2910283 + ... + 3273546.

It is an arithmetic number, because the mean of its divisors is an integer number (26018464725).

Almost surely, 2^{1123181228928} is an apocalyptic number.

It is an amenable number.

1123181228928 is an abundant number, since it is smaller than the sum of its proper divisors (2207182255872).

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

1123181228928 is a wasteful number, since it uses less digits than its factorization.

1123181228928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6183900 (or 6183888 counting only the distinct ones).

The product of its digits is 221184, while the sum is 48.

The spelling of 1123181228928 in words is "one trillion, one hundred twenty-three billion, one hundred eighty-one million, two hundred twenty-eight thousand, nine hundred twenty-eight".