260833748257 has 2 divisors, whose sum is σ = 260833748258. Its totient is φ = 260833748256.

The previous prime is 260833748221. The next prime is 260833748261. The reversal of 260833748257 is 752847338062.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 184662716176 + 76171032081 = 429724^2 + 275991^2 .

It is a cyclic number.

It is not a de Polignac number, because 260833748257 - 2¹¹ = 260833746209 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 260833748198 and 260833748207.

It is not a weakly prime, because it can be changed into another prime (260833748557) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130416874128 + 130416874129.

It is an arithmetic number, because the mean of its divisors is an integer number (130416874129).

Almost surely, 2^260833748257 is an apocalyptic number.

It is an amenable number.

260833748257 is a deficient number, since it is larger than the sum of its proper divisors (1).

260833748257 is an equidigital number, since it uses as much as digits as its factorization.

260833748257 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13547520, while the sum is 55.

The spelling of 260833748257 in words is "two hundred sixty billion, eight hundred thirty-three million, seven hundred forty-eight thousand, two hundred fifty-seven".