18143788704 has 48 divisors (see below), whose sum is σ = 47714653728. Its totient is φ = 6036855552.

The previous prime is 18143788703. The next prime is 18143788709. The reversal of 18143788704 is 40788734181.

It is a tau number, because it is divible by the number of its divisors (48).

It is not an unprimeable number, because it can be changed into a prime (18143788703) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 120247 + ... + 225270.

It is an arithmetic number, because the mean of its divisors is an integer number (994055286).

Almost surely, 2^18143788704 is an apocalyptic number.

It is an amenable number.

18143788704 is an abundant number, since it is smaller than the sum of its proper divisors (29570865024).

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

18143788704 is a wasteful number, since it uses less digits than its factorization.

18143788704 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 346077 (or 346069 counting only the distinct ones).

The product of its (nonzero) digits is 1204224, while the sum is 51.

The spelling of 18143788704 in words is "eighteen billion, one hundred forty-three million, seven hundred eighty-eight thousand, seven hundred four".