346997786498717 has 2 divisors, whose sum is σ = 346997786498718. Its totient is φ = 346997786498716.

The previous prime is 346997786498689. The next prime is 346997786498731. The reversal of 346997786498717 is 717894687799643.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 280871924266756 + 66125862231961 = 16759234^2 + 8131781^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-346997786498717 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 346997786498717.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (346997786498117) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 173498893249358 + 173498893249359.

It is an arithmetic number, because the mean of its divisors is an integer number (173498893249359).

Almost surely, 2^{346997786498717} is an apocalyptic number.

It is an amenable number.

346997786498717 is a deficient number, since it is larger than the sum of its proper divisors (1).

346997786498717 is an equidigital number, since it uses as much as digits as its factorization.

346997786498717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 193572384768, while the sum is 95.

The spelling of 346997786498717 in words is "three hundred forty-six trillion, nine hundred ninety-seven billion, seven hundred eighty-six million, four hundred ninety-eight thousand, seven hundred seventeen".