305344220535493 has 2 divisors, whose sum is σ = 305344220535494. Its totient is φ = 305344220535492.

The previous prime is 305344220535451. The next prime is 305344220535587. The reversal of 305344220535493 is 394535022443503.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 228054486769729 + 77289733765764 = 15101473^2 + 8791458^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-305344220535493 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 305344220535493.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (305344220530493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 152672110267746 + 152672110267747.

It is an arithmetic number, because the mean of its divisors is an integer number (152672110267747).

Almost surely, 2^{305344220535493} is an apocalyptic number.

It is an amenable number.

305344220535493 is a deficient number, since it is larger than the sum of its proper divisors (1).

305344220535493 is an equidigital number, since it uses as much as digits as its factorization.

305344220535493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23328000, while the sum is 52.

Adding to 305344220535493 its reverse (394535022443503), we get a palindrome (699879242978996).

The spelling of 305344220535493 in words is "three hundred five trillion, three hundred forty-four billion, two hundred twenty million, five hundred thirty-five thousand, four hundred ninety-three".