18678181472804 has 36 divisors (see below), whose sum is σ = 38024635535964. Its totient is φ = 8004683405376.

The previous prime is 18678181472711. The next prime is 18678181472807. The reversal of 18678181472804 is 40827418187681.

It can be written as a sum of positive squares in 2 ways, for example, as 14189927370304 + 4488254102500 = 3766952^2 + 2118550^2 .

It is not an unprimeable number, because it can be changed into a prime (18678181472807) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4824902 + ... + 7786914.

It is an arithmetic number, because the mean of its divisors is an integer number (1056239875999).

Almost surely, 2^{18678181472804} is an apocalyptic number.

18678181472804 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

It is an amenable number.

18678181472804 is an abundant number, since it is smaller than the sum of its proper divisors (19346454063160).

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

18678181472804 is a wasteful number, since it uses less digits than its factorization.

18678181472804 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2994204 (or 2994195 counting only the distinct ones).

The product of its (nonzero) digits is 38535168, while the sum is 65.

The spelling of 18678181472804 in words is "eighteen trillion, six hundred seventy-eight billion, one hundred eighty-one million, four hundred seventy-two thousand, eight hundred four".