18006348906744 has 128 divisors (see below), whose sum is σ = 49190264340480. Its totient is φ = 5447361584000.

The previous prime is 18006348906731. The next prime is 18006348906761. The reversal of 18006348906744 is 44760984360081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 389834419 + ... + 389880605.

It is an arithmetic number, because the mean of its divisors is an integer number (384298940160).

Almost surely, 2^{18006348906744} is an apocalyptic number.

It is an amenable number.

18006348906744 is an abundant number, since it is smaller than the sum of its proper divisors (31183915433736).

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

18006348906744 is a wasteful number, since it uses less digits than its factorization.

18006348906744 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 48641 (or 48637 counting only the distinct ones).

The product of its (nonzero) digits is 27869184, while the sum is 60.

The spelling of 18006348906744 in words is "eighteen trillion, six billion, three hundred forty-eight million, nine hundred six thousand, seven hundred forty-four".