253684565486353 has 2 divisors, whose sum is σ = 253684565486354. Its totient is φ = 253684565486352.

The previous prime is 253684565486321. The next prime is 253684565486449. The reversal of 253684565486353 is 353684565486352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 251133367507344 + 2551197979009 = 15847188^2 + 1597247^2 .

It is a cyclic number.

It is not a de Polignac number, because 253684565486353 - 2⁵ = 253684565486321 is a prime.

It is not a weakly prime, because it can be changed into another prime (253684565481353) 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, 126842282743176 + 126842282743177.

It is an arithmetic number, because the mean of its divisors is an integer number (126842282743177).

Almost surely, 2^{253684565486353} is an apocalyptic number.

It is an amenable number.

253684565486353 is a deficient number, since it is larger than the sum of its proper divisors (1).

253684565486353 is an equidigital number, since it uses as much as digits as its factorization.

253684565486353 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7464960000, while the sum is 73.

Subtracting 253684565486353 from its reverse (353684565486352), we obtain a palindrome (99999999999999).

The spelling of 253684565486353 in words is "two hundred fifty-three trillion, six hundred eighty-four billion, five hundred sixty-five million, four hundred eighty-six thousand, three hundred fifty-three".