2161427711 has 2 divisors, whose sum is σ = 2161427712. Its totient is φ = 2161427710.

The previous prime is 2161427689. The next prime is 2161427717. The reversal of 2161427711 is 1177241612.

2161427711 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2161427711 - 2⁶ = 2161427647 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2161427717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1080713855 + 1080713856.

It is an arithmetic number, because the mean of its divisors is an integer number (1080713856).

Almost surely, 2^2161427711 is an apocalyptic number.

2161427711 is a deficient number, since it is larger than the sum of its proper divisors (1).

2161427711 is an equidigital number, since it uses as much as digits as its factorization.

2161427711 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4704, while the sum is 32.

The square root of 2161427711 is about 46491.1573420151. The cubic root of 2161427711 is about 1292.9455577832.

The spelling of 2161427711 in words is "two billion, one hundred sixty-one million, four hundred twenty-seven thousand, seven hundred eleven".