260202205390649 has 2 divisors, whose sum is σ = 260202205390650. Its totient is φ = 260202205390648.

The previous prime is 260202205390619. The next prime is 260202205390697. The reversal of 260202205390649 is 946093502202062.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 217147190887225 + 43055014503424 = 14735915^2 + 6561632^2 .

It is a cyclic number.

It is not a de Polignac number, because 260202205390649 - 2¹² = 260202205386553 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 260202205390597 and 260202205390606.

It is not a weakly prime, because it can be changed into another prime (260202205390619) 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, 130101102695324 + 130101102695325.

It is an arithmetic number, because the mean of its divisors is an integer number (130101102695325).

Almost surely, 2^{260202205390649} is an apocalyptic number.

It is an amenable number.

260202205390649 is a deficient number, since it is larger than the sum of its proper divisors (1).

260202205390649 is an equidigital number, since it uses as much as digits as its factorization.

260202205390649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2799360, while the sum is 50.

The spelling of 260202205390649 in words is "two hundred sixty trillion, two hundred two billion, two hundred five million, three hundred ninety thousand, six hundred forty-nine".