2161541411 has 2 divisors, whose sum is σ = 2161541412. Its totient is φ = 2161541410.

The previous prime is 2161541399. The next prime is 2161541423. The reversal of 2161541411 is 1141451612.

It is a balanced prime because it is at equal distance from previous prime (2161541399) and next prime (2161541423).

It is a cyclic number.

It is not a de Polignac number, because 2161541411 - 2²⁶ = 2094432547 is a prime.

It is a super-2 number, since 2×2161541411² = 9344522542935741842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2161541911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080770705 + 1080770706.

It is an arithmetic number, because the mean of its divisors is an integer number (1080770706).

Almost surely, 2^2161541411 is an apocalyptic number.

2161541411 is a deficient number, since it is larger than the sum of its proper divisors (1).

2161541411 is an equidigital number, since it uses as much as digits as its factorization.

2161541411 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 960, while the sum is 26.

The square root of 2161541411 is about 46492.3801391153. The cubic root of 2161541411 is about 1292.9682288063.

The spelling of 2161541411 in words is "two billion, one hundred sixty-one million, five hundred forty-one thousand, four hundred eleven".