18218124217908 has 48 divisors (see below), whose sum is σ = 47261312029120. Its totient is φ = 6068961741600.

The previous prime is 18218124217907. The next prime is 18218124217913. The reversal of 18218124217908 is 80971242181281.

18218124217908 is a `hidden beast` number, since 1 + 8 + 218 + 124 + 217 + 90 + 8 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18218124217907) 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, 51856498 + ... + 52206633.

Almost surely, 2^{18218124217908} is an apocalyptic number.

18218124217908 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18218124217908 is an abundant number, since it is smaller than the sum of its proper divisors (29043187811212).

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

18218124217908 is a wasteful number, since it uses less digits than its factorization.

18218124217908 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 104064765 (or 104064757 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 54.

The spelling of 18218124217908 in words is "eighteen trillion, two hundred eighteen billion, one hundred twenty-four million, two hundred seventeen thousand, nine hundred eight".