18705545996 has 12 divisors (see below), whose sum is σ = 32748972648. Its totient is φ = 9348696672.

The previous prime is 18705545993. The next prime is 18705546031. The reversal of 18705545996 is 69954550781.

It is not an unprimeable number, because it can be changed into a prime (18705545993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1008746 + ... + 1027121.

It is an arithmetic number, because the mean of its divisors is an integer number (2729081054).

Almost surely, 2^18705545996 is an apocalyptic number.

It is an amenable number.

18705545996 is a deficient number, since it is larger than the sum of its proper divisors (14043426652).

18705545996 is a wasteful number, since it uses less digits than its factorization.

18705545996 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2038168 (or 2038166 counting only the distinct ones).

The product of its (nonzero) digits is 13608000, while the sum is 59.

The spelling of 18705545996 in words is "eighteen billion, seven hundred five million, five hundred forty-five thousand, nine hundred ninety-six".