4651344661 has 2 divisors, whose sum is σ = 4651344662. Its totient is φ = 4651344660.

The previous prime is 4651344641. The next prime is 4651344667. The reversal of 4651344661 is 1664431564.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 4644422500 + 6922161 = 68150^2 + 2631^2 .

It is a cyclic number.

It is not a de Polignac number, because 4651344661 - 2³¹ = 2503861013 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4651344667) 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, 2325672330 + 2325672331.

It is an arithmetic number, because the mean of its divisors is an integer number (2325672331).

Almost surely, 2^4651344661 is an apocalyptic number.

It is an amenable number.

4651344661 is a deficient number, since it is larger than the sum of its proper divisors (1).

4651344661 is an equidigital number, since it uses as much as digits as its factorization.

4651344661 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 207360, while the sum is 40.

The square root of 4651344661 is about 68200.7673050678. The cubic root of 4651344661 is about 1669.2684068865.

The spelling of 4651344661 in words is "four billion, six hundred fifty-one million, three hundred forty-four thousand, six hundred sixty-one".