260304440406553 has 2 divisors, whose sum is σ = 260304440406554. Its totient is φ = 260304440406552.

The previous prime is 260304440406473. The next prime is 260304440406559. The reversal of 260304440406553 is 355604044403062.

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., 234320260395529 + 25984180011024 = 15307523^2 + 5097468^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-260304440406553 is a prime.

It is not a weakly prime, because it can be changed into another prime (260304440406559) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 130152220203276 + 130152220203277.

It is an arithmetic number, because the mean of its divisors is an integer number (130152220203277).

Almost surely, 2^{260304440406553} is an apocalyptic number.

It is an amenable number.

260304440406553 is a deficient number, since it is larger than the sum of its proper divisors (1).

260304440406553 is an equidigital number, since it uses as much as digits as its factorization.

260304440406553 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4147200, while the sum is 46.

The spelling of 260304440406553 in words is "two hundred sixty trillion, three hundred four billion, four hundred forty million, four hundred six thousand, five hundred fifty-three".