18416685018355 has 32 divisors (see below), whose sum is σ = 23822792622720. Its totient is φ = 13587008394240.

The previous prime is 18416685018307. The next prime is 18416685018373. The reversal of 18416685018355 is 55381058661481.

It is a happy number.

It is not a de Polignac number, because 18416685018355 - 2¹¹ = 18416685016307 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 18416685018293 and 18416685018302.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 341776015 + ... + 341829895.

It is an arithmetic number, because the mean of its divisors is an integer number (744462269460).

Almost surely, 2^{18416685018355} is an apocalyptic number.

18416685018355 is a deficient number, since it is larger than the sum of its proper divisors (5406107604365).

18416685018355 is a wasteful number, since it uses less digits than its factorization.

18416685018355 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58831.

The product of its (nonzero) digits is 27648000, while the sum is 61.

The spelling of 18416685018355 in words is "eighteen trillion, four hundred sixteen billion, six hundred eighty-five million, eighteen thousand, three hundred fifty-five".