2636465324261 has 2 divisors, whose sum is σ = 2636465324262. Its totient is φ = 2636465324260.

The previous prime is 2636465324203. The next prime is 2636465324279. The reversal of 2636465324261 is 1624235646362.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1624620455236 + 1011844869025 = 1274606^2 + 1005905^2 .

It is a cyclic number.

It is not a de Polignac number, because 2636465324261 - 2¹⁸ = 2636465062117 is a prime.

It is a super-2 number, since 2×2636465324261² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2636465324291) 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, 1318232662130 + 1318232662131.

It is an arithmetic number, because the mean of its divisors is an integer number (1318232662131).

Almost surely, 2^{2636465324261} is an apocalyptic number.

It is an amenable number.

2636465324261 is a deficient number, since it is larger than the sum of its proper divisors (1).

2636465324261 is an equidigital number, since it uses as much as digits as its factorization.

2636465324261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7464960, while the sum is 50.

The spelling of 2636465324261 in words is "two trillion, six hundred thirty-six billion, four hundred sixty-five million, three hundred twenty-four thousand, two hundred sixty-one".