1718408121018 has 16 divisors (see below), whose sum is σ = 3586243035456. Its totient is φ = 547898241440.

The previous prime is 1718408121013. The next prime is 1718408121019. The reversal of 1718408121018 is 8101218048171.

It is a super-2 number, since 2×1718408121018² (a number of 25 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1718408121013) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6226116243 + ... + 6226116518.

It is an arithmetic number, because the mean of its divisors is an integer number (224140189716).

Almost surely, 2^{1718408121018} is an apocalyptic number.

1718408121018 is an abundant number, since it is smaller than the sum of its proper divisors (1867834914438).

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

1718408121018 is a wasteful number, since it uses less digits than its factorization.

1718408121018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12452232789.

The product of its (nonzero) digits is 28672, while the sum is 42.

The spelling of 1718408121018 in words is "one trillion, seven hundred eighteen billion, four hundred eight million, one hundred twenty-one thousand, eighteen".