5236140661 has 2 divisors, whose sum is σ = 5236140662. Its totient is φ = 5236140660.

The previous prime is 5236140599. The next prime is 5236140667. The reversal of 5236140661 is 1660416325.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3399589636 + 1836551025 = 58306^2 + 42855^2 .

It is a cyclic number.

It is not a de Polignac number, because 5236140661 - 2¹¹ = 5236138613 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (5236140667) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2618070330 + 2618070331.

It is an arithmetic number, because the mean of its divisors is an integer number (2618070331).

Almost surely, 2^5236140661 is an apocalyptic number.

It is an amenable number.

5236140661 is a deficient number, since it is larger than the sum of its proper divisors (1).

5236140661 is an equidigital number, since it uses as much as digits as its factorization.

5236140661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 34.

The square root of 5236140661 is about 72361.1820038894. The cubic root of 5236140661 is about 1736.4825958945.

Adding to 5236140661 its reverse (1660416325), we get a palindrome (6896556986).

The spelling of 5236140661 in words is "five billion, two hundred thirty-six million, one hundred forty thousand, six hundred sixty-one".