166023516049 has 2 divisors, whose sum is σ = 166023516050. Its totient is φ = 166023516048.

The previous prime is 166023516037. The next prime is 166023516107. The reversal of 166023516049 is 940615320661.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90072014400 + 75951501649 = 300120^2 + 275593^2 .

It is a cyclic number.

It is not a de Polignac number, because 166023516049 - 2⁷ = 166023515921 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 166023515996 and 166023516014.

It is not a weakly prime, because it can be changed into another prime (166023516149) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83011758024 + 83011758025.

It is an arithmetic number, because the mean of its divisors is an integer number (83011758025).

Almost surely, 2^166023516049 is an apocalyptic number.

It is an amenable number.

166023516049 is a deficient number, since it is larger than the sum of its proper divisors (1).

166023516049 is an equidigital number, since it uses as much as digits as its factorization.

166023516049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 43.

The spelling of 166023516049 in words is "one hundred sixty-six billion, twenty-three million, five hundred sixteen thousand, forty-nine".