2161760061111 has 16 divisors (see below), whose sum is σ = 3294131602944. Its totient is φ = 1235283575904.

The previous prime is 2161760061101. The next prime is 2161760061157. The reversal of 2161760061111 is 1111600671612.

It is a happy number.

It is not a de Polignac number, because 2161760061111 - 2⁶ = 2161760061047 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2161760061101) 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, 5206461 + ... + 5606313.

It is an arithmetic number, because the mean of its divisors is an integer number (205883225184).

Almost surely, 2^{2161760061111} is an apocalyptic number.

2161760061111 is a gapful number since it is divisible by the number (21) formed by its first and last digit.

2161760061111 is a deficient number, since it is larger than the sum of its proper divisors (1132371541833).

2161760061111 is a wasteful number, since it uses less digits than its factorization.

2161760061111 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 657310.

The product of its (nonzero) digits is 3024, while the sum is 33.

The spelling of 2161760061111 in words is "two trillion, one hundred sixty-one billion, seven hundred sixty million, sixty-one thousand, one hundred eleven".