306646100341661 has 2 divisors, whose sum is σ = 306646100341662. Its totient is φ = 306646100341660.

The previous prime is 306646100341643. The next prime is 306646100341681. The reversal of 306646100341661 is 166143001646603.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 155520727932025 + 151125372409636 = 12470795^2 + 12293306^2 .

It is a cyclic number.

It is not a de Polignac number, because 306646100341661 - 2³⁴ = 306628920472477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (306646100341621) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 153323050170830 + 153323050170831.

It is an arithmetic number, because the mean of its divisors is an integer number (153323050170831).

Almost surely, 2^{306646100341661} is an apocalyptic number.

It is an amenable number.

306646100341661 is a deficient number, since it is larger than the sum of its proper divisors (1).

306646100341661 is an equidigital number, since it uses as much as digits as its factorization.

306646100341661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1119744, while the sum is 47.

The spelling of 306646100341661 in words is "three hundred six trillion, six hundred forty-six billion, one hundred million, three hundred forty-one thousand, six hundred sixty-one".