2161334633423 has 16 divisors (see below), whose sum is σ = 2519988360960. Its totient is φ = 1815354455616.

The previous prime is 2161334633417. The next prime is 2161334633449. The reversal of 2161334633423 is 3243364331612.

It is a cyclic number.

It is not a de Polignac number, because 2161334633423 - 2²⁰ = 2161333584847 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161334635423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8230565 + ... + 8489102.

It is an arithmetic number, because the mean of its divisors is an integer number (157499272560).

Almost surely, 2^{2161334633423} is an apocalyptic number.

2161334633423 is a deficient number, since it is larger than the sum of its proper divisors (358653727537).

2161334633423 is a wasteful number, since it uses less digits than its factorization.

2161334633423 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16720046.

The product of its digits is 559872, while the sum is 41.

The spelling of 2161334633423 in words is "two trillion, one hundred sixty-one billion, three hundred thirty-four million, six hundred thirty-three thousand, four hundred twenty-three".