18105017854854 has 32 divisors (see below), whose sum is σ = 41622105473280. Its totient is φ = 5142961304352.

The previous prime is 18105017854771. The next prime is 18105017854871. The reversal of 18105017854854 is 45845871050181.

It is a super-2 number, since 2×18105017854854² (a number of 27 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18105017854794 and 18105017854803.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1245865144 + ... + 1245879675.

It is an arithmetic number, because the mean of its divisors is an integer number (1300690796040).

Almost surely, 2^{18105017854854} is an apocalyptic number.

18105017854854 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18105017854854 is an abundant number, since it is smaller than the sum of its proper divisors (23517087618426).

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

18105017854854 is a wasteful number, since it uses less digits than its factorization.

18105017854854 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2491745004.

The product of its (nonzero) digits is 7168000, while the sum is 57.

The spelling of 18105017854854 in words is "eighteen trillion, one hundred five billion, seventeen million, eight hundred fifty-four thousand, eight hundred fifty-four".