261452646179 has 2 divisors, whose sum is σ = 261452646180. Its totient is φ = 261452646178.

The previous prime is 261452646163. The next prime is 261452646253. The reversal of 261452646179 is 971646254162.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 261452646179 - 2⁴ = 261452646163 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 261452646179.

It is not a weakly prime, because it can be changed into another prime (261452646779) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130726323089 + 130726323090.

It is an arithmetic number, because the mean of its divisors is an integer number (130726323090).

Almost surely, 2^261452646179 is an apocalyptic number.

261452646179 is a deficient number, since it is larger than the sum of its proper divisors (1).

261452646179 is an equidigital number, since it uses as much as digits as its factorization.

261452646179 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4354560, while the sum is 53.

The spelling of 261452646179 in words is "two hundred sixty-one billion, four hundred fifty-two million, six hundred forty-six thousand, one hundred seventy-nine".