166416031424441 has 2 divisors, whose sum is σ = 166416031424442. Its totient is φ = 166416031424440.

The previous prime is 166416031424341. The next prime is 166416031424497. The reversal of 166416031424441 is 144424130614661.

166416031424441 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 can be written as a sum of positive squares in only one way, i.e., 88286413327225 + 78129618097216 = 9396085^2 + 8839096^2 .

It is a cyclic number.

It is not a de Polignac number, because 166416031424441 - 2³⁴ = 166398851555257 is a prime.

It is not a weakly prime, because it can be changed into another prime (166416031424341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83208015712220 + 83208015712221.

It is an arithmetic number, because the mean of its divisors is an integer number (83208015712221).

Almost surely, 2^{166416031424441} is an apocalyptic number.

It is an amenable number.

166416031424441 is a deficient number, since it is larger than the sum of its proper divisors (1).

166416031424441 is an equidigital number, since it uses as much as digits as its factorization.

166416031424441 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1327104, while the sum is 47.

The spelling of 166416031424441 in words is "one hundred sixty-six trillion, four hundred sixteen billion, thirty-one million, four hundred twenty-four thousand, four hundred forty-one".