18454944665105 has 64 divisors (see below), whose sum is σ = 25088749056000. Its totient is φ = 12937381696512.

The previous prime is 18454944665081. The next prime is 18454944665233. The reversal of 18454944665105 is 50156644945481.

It is not a de Polignac number, because 18454944665105 - 2²² = 18454940470801 is a prime.

It is a super-2 number, since 2×18454944665105² (a number of 27 digits) contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 35331419 + ... + 35849951.

It is an arithmetic number, because the mean of its divisors is an integer number (392011704000).

Almost surely, 2^{18454944665105} is an apocalyptic number.

It is an amenable number.

18454944665105 is a deficient number, since it is larger than the sum of its proper divisors (6633804390895).

18454944665105 is a wasteful number, since it uses less digits than its factorization.

18454944665105 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 518898.

The product of its (nonzero) digits is 82944000, while the sum is 62.

The spelling of 18454944665105 in words is "eighteen trillion, four hundred fifty-four billion, nine hundred forty-four million, six hundred sixty-five thousand, one hundred five".