260346239957 has 2 divisors, whose sum is σ = 260346239958. Its totient is φ = 260346239956.

The previous prime is 260346239953. The next prime is 260346240023. The reversal of 260346239957 is 759932643062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 173223272401 + 87122967556 = 416201^2 + 295166^2 .

It is a cyclic number.

It is not a de Polignac number, because 260346239957 - 2² = 260346239953 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260346239953) 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, 130173119978 + 130173119979.

It is an arithmetic number, because the mean of its divisors is an integer number (130173119979).

Almost surely, 2^260346239957 is an apocalyptic number.

It is an amenable number.

260346239957 is a deficient number, since it is larger than the sum of its proper divisors (1).

260346239957 is an equidigital number, since it uses as much as digits as its factorization.

260346239957 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 14696640, while the sum is 56.

The spelling of 260346239957 in words is "two hundred sixty billion, three hundred forty-six million, two hundred thirty-nine thousand, nine hundred fifty-seven".