165983162418211 has 2 divisors, whose sum is σ = 165983162418212. Its totient is φ = 165983162418210.

The previous prime is 165983162418119. The next prime is 165983162418251. The reversal of 165983162418211 is 112814261389561.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 165983162418211 - 2³⁷ = 165845723464739 is a prime.

It is not a weakly prime, because it can be changed into another prime (165983162418251) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 82991581209105 + 82991581209106.

It is an arithmetic number, because the mean of its divisors is an integer number (82991581209106).

Almost surely, 2^{165983162418211} is an apocalyptic number.

165983162418211 is a deficient number, since it is larger than the sum of its proper divisors (1).

165983162418211 is an equidigital number, since it uses as much as digits as its factorization.

165983162418211 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4976640, while the sum is 58.

The spelling of 165983162418211 in words is "one hundred sixty-five trillion, nine hundred eighty-three billion, one hundred sixty-two million, four hundred eighteen thousand, two hundred eleven".