18371727712 has 36 divisors (see below), whose sum is σ = 39165627060. Its totient is φ = 8479256448.

The previous prime is 18371727653. The next prime is 18371727743. The reversal of 18371727712 is 21772717381.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1693162 + ... + 1703977.

It is an arithmetic number, because the mean of its divisors is an integer number (1087934085).

Almost surely, 2^18371727712 is an apocalyptic number.

It is an amenable number.

18371727712 is an abundant number, since it is smaller than the sum of its proper divisors (20793899348).

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

18371727712 is a wasteful number, since it uses less digits than its factorization.

18371727712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3397175 (or 3397154 counting only the distinct ones).

The product of its digits is 230496, while the sum is 46.

The spelling of 18371727712 in words is "eighteen billion, three hundred seventy-one million, seven hundred twenty-seven thousand, seven hundred twelve".