8418161872121 has 8 divisors (see below), whose sum is σ = 8442146778624. Its totient is φ = 8394177742720.

The previous prime is 8418161872069. The next prime is 8418161872157. The reversal of 8418161872121 is 1212781618148.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8418161872121 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8418161872121.

It is not an unprimeable number, because it can be changed into a prime (8418161877121) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 26852540 + ... + 27164226.

It is an arithmetic number, because the mean of its divisors is an integer number (1055268347328).

Almost surely, 2^{8418161872121} is an apocalyptic number.

It is an amenable number.

8418161872121 is a deficient number, since it is larger than the sum of its proper divisors (23984906503).

8418161872121 is a wasteful number, since it uses less digits than its factorization.

8418161872121 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 388551.

The product of its digits is 344064, while the sum is 50.

The spelling of 8418161872121 in words is "eight trillion, four hundred eighteen billion, one hundred sixty-one million, eight hundred seventy-two thousand, one hundred twenty-one".