2161733724161 has 8 divisors (see below), whose sum is σ = 2359350332064. Its totient is φ = 1964299676320.

The previous prime is 2161733724091. The next prime is 2161733724209. The reversal of 2161733724161 is 1614273371612.

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 2161733724161 - 2³⁰ = 2160659982337 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2161733724961) 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, 45615251 + ... + 45662616.

It is an arithmetic number, because the mean of its divisors is an integer number (294918791508).

Almost surely, 2^{2161733724161} is an apocalyptic number.

It is an amenable number.

2161733724161 is a deficient number, since it is larger than the sum of its proper divisors (197616607903).

2161733724161 is a wasteful number, since it uses less digits than its factorization.

2161733724161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91280031.

The product of its digits is 254016, while the sum is 44.

The spelling of 2161733724161 in words is "two trillion, one hundred sixty-one billion, seven hundred thirty-three million, seven hundred twenty-four thousand, one hundred sixty-one".