260170800821 has 2 divisors, whose sum is σ = 260170800822. Its totient is φ = 260170800820.

The previous prime is 260170800809. The next prime is 260170800871. The reversal of 260170800821 is 128008071062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 149238506596 + 110932294225 = 386314^2 + 333065^2 .

It is a cyclic number.

It is not a de Polignac number, because 260170800821 - 2³⁴ = 242990931637 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (260170800871) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130085400410 + 130085400411.

It is an arithmetic number, because the mean of its divisors is an integer number (130085400411).

Almost surely, 2^260170800821 is an apocalyptic number.

It is an amenable number.

260170800821 is a deficient number, since it is larger than the sum of its proper divisors (1).

260170800821 is an equidigital number, since it uses as much as digits as its factorization.

260170800821 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 10752, while the sum is 35.

Adding to 260170800821 its reverse (128008071062), we get a palindrome (388178871883).

The spelling of 260170800821 in words is "two hundred sixty billion, one hundred seventy million, eight hundred thousand, eight hundred twenty-one".