4995718561 has 2 divisors, whose sum is σ = 4995718562. Its totient is φ = 4995718560.

The previous prime is 4995718529. The next prime is 4995718589. The reversal of 4995718561 is 1658175994.

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., 3630785536 + 1364933025 = 60256^2 + 36945^2 .

It is a cyclic number.

It is not a de Polignac number, because 4995718561 - 2⁵ = 4995718529 is a prime.

It is not a weakly prime, because it can be changed into another prime (4995718261) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2497859280 + 2497859281.

It is an arithmetic number, because the mean of its divisors is an integer number (2497859281).

Almost surely, 2^4995718561 is an apocalyptic number.

It is an amenable number.

4995718561 is a deficient number, since it is larger than the sum of its proper divisors (1).

4995718561 is an equidigital number, since it uses as much as digits as its factorization.

4995718561 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2721600, while the sum is 55.

The square root of 4995718561 is about 70680.3972894890. The cubic root of 4995718561 is about 1709.4877301184.

The spelling of 4995718561 in words is "four billion, nine hundred ninety-five million, seven hundred eighteen thousand, five hundred sixty-one".