2112643514161 has 8 divisors (see below), whose sum is σ = 2114632978920. Its totient is φ = 2110654491648.

The previous prime is 2112643514143. The next prime is 2112643514197. The reversal of 2112643514161 is 1614153462112.

It can be written as a sum of positive squares in 4 ways, for example, as 1663584040000 + 449059474161 = 1289800^2 + 670119^2 .

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 2112643514161 - 2⁹ = 2112643513649 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 2112643514161.

It is not an unprimeable number, because it can be changed into a prime (2112643515161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9869905 + ... + 10081681.

It is an arithmetic number, because the mean of its divisors is an integer number (264329122365).

Almost surely, 2^{2112643514161} is an apocalyptic number.

It is an amenable number.

2112643514161 is a deficient number, since it is larger than the sum of its proper divisors (1989464759).

2112643514161 is a wasteful number, since it uses less digits than its factorization.

2112643514161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 221123.

The product of its digits is 34560, while the sum is 37.

Adding to 2112643514161 its reverse (1614153462112), we get a palindrome (3726796976273).

The spelling of 2112643514161 in words is "two trillion, one hundred twelve billion, six hundred forty-three million, five hundred fourteen thousand, one hundred sixty-one".