18144466678 has 16 divisors (see below), whose sum is σ = 29343373920. Its totient is φ = 8364928008.

The previous prime is 18144466633. The next prime is 18144466693. The reversal of 18144466678 is 87666444181.

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, 20455551 + ... + 20456437.

It is an arithmetic number, because the mean of its divisors is an integer number (1833960870).

Almost surely, 2^18144466678 is an apocalyptic number.

18144466678 is a deficient number, since it is larger than the sum of its proper divisors (11198907242).

18144466678 is an frugal number, since it uses more digits than its factorization.

18144466678 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2676 (or 902 counting only the distinct ones).

The product of its digits is 6193152, while the sum is 55.

The spelling of 18144466678 in words is "eighteen billion, one hundred forty-four million, four hundred sixty-six thousand, six hundred seventy-eight".