260012661691 has 2 divisors, whose sum is σ = 260012661692. Its totient is φ = 260012661690.

The previous prime is 260012661631. The next prime is 260012661697. The reversal of 260012661691 is 196166210062.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 260012661691 - 2⁹ = 260012661179 is a prime.

It is not a weakly prime, because it can be changed into another prime (260012661697) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130006330845 + 130006330846.

It is an arithmetic number, because the mean of its divisors is an integer number (130006330846).

Almost surely, 2^260012661691 is an apocalyptic number.

260012661691 is a deficient number, since it is larger than the sum of its proper divisors (1).

260012661691 is an equidigital number, since it uses as much as digits as its factorization.

260012661691 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 46656, while the sum is 40.

The spelling of 260012661691 in words is "two hundred sixty billion, twelve million, six hundred sixty-one thousand, six hundred ninety-one".