166019950241 has 2 divisors, whose sum is σ = 166019950242. Its totient is φ = 166019950240.

The previous prime is 166019950193. The next prime is 166019950297. The reversal of 166019950241 is 142059910661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 120617290000 + 45402660241 = 347300^2 + 213079^2 .

It is a cyclic number.

It is not a de Polignac number, because 166019950241 - 2²⁶ = 165952841377 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166019950192 and 166019950201.

It is not a weakly prime, because it can be changed into another prime (166019950141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83009975120 + 83009975121.

It is an arithmetic number, because the mean of its divisors is an integer number (83009975121).

Almost surely, 2^166019950241 is an apocalyptic number.

It is an amenable number.

166019950241 is a deficient number, since it is larger than the sum of its proper divisors (1).

166019950241 is an equidigital number, since it uses as much as digits as its factorization.

166019950241 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 44.

The spelling of 166019950241 in words is "one hundred sixty-six billion, nineteen million, nine hundred fifty thousand, two hundred forty-one".