2357716661 has 2 divisors, whose sum is σ = 2357716662. Its totient is φ = 2357716660.

The previous prime is 2357716643. The next prime is 2357716681. The reversal of 2357716661 is 1666177532.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1214871025 + 1142845636 = 34855^2 + 33806^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2357716661 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2357716681) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1178858330 + 1178858331.

It is an arithmetic number, because the mean of its divisors is an integer number (1178858331).

Almost surely, 2^2357716661 is an apocalyptic number.

It is an amenable number.

2357716661 is a deficient number, since it is larger than the sum of its proper divisors (1).

2357716661 is an equidigital number, since it uses as much as digits as its factorization.

2357716661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 317520, while the sum is 44.

The square root of 2357716661 is about 48556.3246240899. The cubic root of 2357716661 is about 1330.9565284428.

The spelling of 2357716661 in words is "two billion, three hundred fifty-seven million, seven hundred sixteen thousand, six hundred sixty-one".