18449898405121 has 8 divisors (see below), whose sum is σ = 18453759448320. Its totient is φ = 18446037784272.

The previous prime is 18449898405073. The next prime is 18449898405163. The reversal of 18449898405121 is 12150489894481.

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 18449898405121 - 2¹¹ = 18449898403073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18449998405121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 96238800 + ... + 96430318.

It is an arithmetic number, because the mean of its divisors is an integer number (2306719931040).

Almost surely, 2^{18449898405121} is an apocalyptic number.

It is an amenable number.

18449898405121 is a deficient number, since it is larger than the sum of its proper divisors (3861043199).

18449898405121 is a wasteful number, since it uses less digits than its factorization.

18449898405121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 211175.

The product of its (nonzero) digits is 26542080, while the sum is 64.

The spelling of 18449898405121 in words is "eighteen trillion, four hundred forty-nine billion, eight hundred ninety-eight million, four hundred five thousand, one hundred twenty-one".