1216678393184 has 12 divisors (see below), whose sum is σ = 2395335586644. Its totient is φ = 608339196576.

The previous prime is 1216678393163. The next prime is 1216678393261. The reversal of 1216678393184 is 4813938766121.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19010599862 + ... + 19010599925.

It is an arithmetic number, because the mean of its divisors is an integer number (199611298887).

Almost surely, 2^{1216678393184} is an apocalyptic number.

It is an amenable number.

1216678393184 is a deficient number, since it is larger than the sum of its proper divisors (1178657193460).

1216678393184 is an equidigital number, since it uses as much as digits as its factorization.

1216678393184 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38021199797 (or 38021199789 counting only the distinct ones).

The product of its digits is 10450944, while the sum is 59.

The spelling of 1216678393184 in words is "one trillion, two hundred sixteen billion, six hundred seventy-eight million, three hundred ninety-three thousand, one hundred eighty-four".