4661505691 has 2 divisors, whose sum is σ = 4661505692. Its totient is φ = 4661505690.

The previous prime is 4661505659. The next prime is 4661505713. The reversal of 4661505691 is 1965051664.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 4661505691 - 2⁵ = 4661505659 is a prime.

It is not a weakly prime, because it can be changed into another prime (4661509691) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2330752845 + 2330752846.

It is an arithmetic number, because the mean of its divisors is an integer number (2330752846).

Almost surely, 2^4661505691 is an apocalyptic number.

4661505691 is a deficient number, since it is larger than the sum of its proper divisors (1).

4661505691 is an equidigital number, since it uses as much as digits as its factorization.

4661505691 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 194400, while the sum is 43.

The square root of 4661505691 is about 68275.2201827281. The cubic root of 4661505691 is about 1670.4830484988.

The spelling of 4661505691 in words is "four billion, six hundred sixty-one million, five hundred five thousand, six hundred ninety-one".