18340518203100 has 108 divisors (see below), whose sum is σ = 57668684348184. Its totient is φ = 4875376371840.

The previous prime is 18340518203089. The next prime is 18340518203107. The reversal of 18340518203100 is 130281504381.

18340518203100 is a `hidden beast` number, since 1 + 8 + 34 + 0 + 518 + 2 + 0 + 3 + 100 = 666.

It is a super-2 number, since 2×18340518203100² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18340518203107) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 31857214 + ... + 32427813.

Almost surely, 2^{18340518203100} is an apocalyptic number.

18340518203100 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18340518203100 is an abundant number, since it is smaller than the sum of its proper divisors (39328166145084).

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

18340518203100 is a wasteful number, since it uses less digits than its factorization.

18340518203100 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64285364 (or 64285354 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 36.

Adding to 18340518203100 its reverse (130281504381), we get a palindrome (18470799707481).

The spelling of 18340518203100 in words is "eighteen trillion, three hundred forty billion, five hundred eighteen million, two hundred three thousand, one hundred".