2161444441612 has 12 divisors (see below), whose sum is σ = 3801728422800. Its totient is φ = 1075236320816.

The previous prime is 2161444441553. The next prime is 2161444441703.

2161444441612 is nontrivially palindromic in base 10.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1371474112 + ... + 1371475687.

It is an arithmetic number, because the mean of its divisors is an integer number (316810701900).

Almost surely, 2^{2161444441612} is an apocalyptic number.

It is an amenable number.

2161444441612 is a deficient number, since it is larger than the sum of its proper divisors (1640283981188).

2161444441612 is a wasteful number, since it uses less digits than its factorization.

2161444441612 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2742950000 (or 2742949998 counting only the distinct ones).

The product of its digits is 147456, while the sum is 40.

The spelling of 2161444441612 in words is "two trillion, one hundred sixty-one billion, four hundred forty-four million, four hundred forty-one thousand, six hundred twelve".