18318128077004 has 48 divisors (see below), whose sum is σ = 36711006276672. Its totient is φ = 7834623912192.

The previous prime is 18318128077003. The next prime is 18318128077049. The reversal of 18318128077004 is 40077082181381.

It is not an unprimeable number, because it can be changed into a prime (18318128077003) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 28176134 + ... + 28818930.

It is an arithmetic number, because the mean of its divisors is an integer number (764812630764).

Almost surely, 2^{18318128077004} is an apocalyptic number.

18318128077004 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18318128077004 is an abundant number, since it is smaller than the sum of its proper divisors (18392878199668).

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

18318128077004 is a wasteful number, since it uses less digits than its factorization.

18318128077004 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 644882 (or 644880 counting only the distinct ones).

The product of its (nonzero) digits is 602112, while the sum is 50.

The spelling of 18318128077004 in words is "eighteen trillion, three hundred eighteen billion, one hundred twenty-eight million, seventy-seven thousand, four".