2166870269611 has 2 divisors, whose sum is σ = 2166870269612. Its totient is φ = 2166870269610.

The previous prime is 2166870269591. The next prime is 2166870269639. The reversal of 2166870269611 is 1169620786612.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2166870269611 - 2¹⁷ = 2166870138539 is a prime.

It is not a weakly prime, because it can be changed into another prime (2166870269651) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1083435134805 + 1083435134806.

It is an arithmetic number, because the mean of its divisors is an integer number (1083435134806).

Almost surely, 2^{2166870269611} is an apocalyptic number.

2166870269611 is a deficient number, since it is larger than the sum of its proper divisors (1).

2166870269611 is an equidigital number, since it uses as much as digits as its factorization.

2166870269611 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2612736, while the sum is 55.

The spelling of 2166870269611 in words is "two trillion, one hundred sixty-six billion, eight hundred seventy million, two hundred sixty-nine thousand, six hundred eleven".