166849923041 has 2 divisors, whose sum is σ = 166849923042. Its totient is φ = 166849923040.

The previous prime is 166849922977. The next prime is 166849923049. The reversal of 166849923041 is 140329948661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 95483472016 + 71366451025 = 309004^2 + 267145^2 .

It is a cyclic number.

It is not a de Polignac number, because 166849923041 - 2⁶ = 166849922977 is a prime.

It is not a weakly prime, because it can be changed into another prime (166849923049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83424961520 + 83424961521.

It is an arithmetic number, because the mean of its divisors is an integer number (83424961521).

Almost surely, 2^166849923041 is an apocalyptic number.

It is an amenable number.

166849923041 is a deficient number, since it is larger than the sum of its proper divisors (1).

166849923041 is an equidigital number, since it uses as much as digits as its factorization.

166849923041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2239488, while the sum is 53.

The spelling of 166849923041 in words is "one hundred sixty-six billion, eight hundred forty-nine million, nine hundred twenty-three thousand, forty-one".