303393943974689 has 2 divisors, whose sum is σ = 303393943974690. Its totient is φ = 303393943974688.

The previous prime is 303393943974679. The next prime is 303393943974691. The reversal of 303393943974689 is 986479349393303.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 288380953859089 + 15012990115600 = 16981783^2 + 3874660^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-303393943974689 is a prime.

Together with 303393943974691, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (303393943974629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 151696971987344 + 151696971987345.

It is an arithmetic number, because the mean of its divisors is an integer number (151696971987345).

Almost surely, 2^{303393943974689} is an apocalyptic number.

It is an amenable number.

303393943974689 is a deficient number, since it is larger than the sum of its proper divisors (1).

303393943974689 is an equidigital number, since it uses as much as digits as its factorization.

303393943974689 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8571080448, while the sum is 80.

The spelling of 303393943974689 in words is "three hundred three trillion, three hundred ninety-three billion, nine hundred forty-three million, nine hundred seventy-four thousand, six hundred eighty-nine".