665010166049 has 2 divisors, whose sum is σ = 665010166050. Its totient is φ = 665010166048.

The previous prime is 665010166031. The next prime is 665010166087. The reversal of 665010166049 is 940661010566.

665010166049 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 628531840000 + 36478326049 = 792800^2 + 190993^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-665010166049 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (665010169049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 332505083024 + 332505083025.

It is an arithmetic number, because the mean of its divisors is an integer number (332505083025).

Almost surely, 2^665010166049 is an apocalyptic number.

It is an amenable number.

665010166049 is a deficient number, since it is larger than the sum of its proper divisors (1).

665010166049 is an equidigital number, since it uses as much as digits as its factorization.

665010166049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 44.

The spelling of 665010166049 in words is "six hundred sixty-five billion, ten million, one hundred sixty-six thousand, forty-nine".