183687730661 has 2 divisors, whose sum is σ = 183687730662. Its totient is φ = 183687730660.

The previous prime is 183687730651. The next prime is 183687730769. The reversal of 183687730661 is 166037786381.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 96836104225 + 86851626436 = 311185^2 + 294706^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-183687730661 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 183687730597 and 183687730606.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (183687730601) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 91843865330 + 91843865331.

It is an arithmetic number, because the mean of its divisors is an integer number (91843865331).

Almost surely, 2^183687730661 is an apocalyptic number.

It is an amenable number.

183687730661 is a deficient number, since it is larger than the sum of its proper divisors (1).

183687730661 is an equidigital number, since it uses as much as digits as its factorization.

183687730661 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6096384, while the sum is 56.

The spelling of 183687730661 in words is "one hundred eighty-three billion, six hundred eighty-seven million, seven hundred thirty thousand, six hundred sixty-one".