261446980423 has 2 divisors, whose sum is σ = 261446980424. Its totient is φ = 261446980422.

The previous prime is 261446980409. The next prime is 261446980463. The reversal of 261446980423 is 324089644162.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 261446980423 - 2¹⁷ = 261446849351 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (261446980463) 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, 130723490211 + 130723490212.

It is an arithmetic number, because the mean of its divisors is an integer number (130723490212).

Almost surely, 2^261446980423 is an apocalyptic number.

261446980423 is a deficient number, since it is larger than the sum of its proper divisors (1).

261446980423 is an equidigital number, since it uses as much as digits as its factorization.

261446980423 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1990656, while the sum is 49.

The spelling of 261446980423 in words is "two hundred sixty-one billion, four hundred forty-six million, nine hundred eighty thousand, four hundred twenty-three".