4561661201 has 2 divisors, whose sum is σ = 4561661202. Its totient is φ = 4561661200.

The previous prime is 4561661197. The next prime is 4561661233. The reversal of 4561661201 is 1021661654.

It is an a-pointer prime, because the next prime (4561661233) can be obtained adding 4561661201 to its sum of digits (32).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3906250000 + 655411201 = 62500^2 + 25601^2 .

It is a cyclic number.

It is not a de Polignac number, because 4561661201 - 2² = 4561661197 is a prime.

It is a weakly prime.

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, 2280830600 + 2280830601.

It is an arithmetic number, because the mean of its divisors is an integer number (2280830601).

Almost surely, 2^4561661201 is an apocalyptic number.

It is an amenable number.

4561661201 is a deficient number, since it is larger than the sum of its proper divisors (1).

4561661201 is an equidigital number, since it uses as much as digits as its factorization.

4561661201 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 4561661201 is about 67540.0710763618. The cubic root of 4561661201 is about 1658.4702121899.

The spelling of 4561661201 in words is "four billion, five hundred sixty-one million, six hundred sixty-one thousand, two hundred one".