18454605218855 has 8 divisors (see below), whose sum is σ = 23849028282912. Its totient is φ = 13628016161568.

The previous prime is 18454605218849. The next prime is 18454605218867. The reversal of 18454605218855 is 55881250645481.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 18454605218855 - 2¹⁶ = 18454605153319 is a prime.

It is a super-2 number, since 2×18454605218855² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 141958501619 + ... + 141958501748.

It is an arithmetic number, because the mean of its divisors is an integer number (2981128535364).

Almost surely, 2^{18454605218855} is an apocalyptic number.

18454605218855 is a deficient number, since it is larger than the sum of its proper divisors (5394423064057).

18454605218855 is a wasteful number, since it uses less digits than its factorization.

18454605218855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 283917003385.

The product of its (nonzero) digits is 61440000, while the sum is 62.

The spelling of 18454605218855 in words is "eighteen trillion, four hundred fifty-four billion, six hundred five million, two hundred eighteen thousand, eight hundred fifty-five".