166846880773 has 2 divisors, whose sum is σ = 166846880774. Its totient is φ = 166846880772.

The previous prime is 166846880723. The next prime is 166846880779. The reversal of 166846880773 is 377088648661.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 166204613124 + 642267649 = 407682^2 + 25343^2 .

It is a cyclic number.

It is not a de Polignac number, because 166846880773 - 2⁹ = 166846880261 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (166846880779) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 83423440386 + 83423440387.

It is an arithmetic number, because the mean of its divisors is an integer number (83423440387).

Almost surely, 2^166846880773 is an apocalyptic number.

It is an amenable number.

166846880773 is a deficient number, since it is larger than the sum of its proper divisors (1).

166846880773 is an equidigital number, since it uses as much as digits as its factorization.

166846880773 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 65028096, while the sum is 64.

The spelling of 166846880773 in words is "one hundred sixty-six billion, eight hundred forty-six million, eight hundred eighty thousand, seven hundred seventy-three".