351680616473 has 2 divisors, whose sum is σ = 351680616474. Its totient is φ = 351680616472.

The previous prime is 351680616439. The next prime is 351680616491. The reversal of 351680616473 is 374616086153.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 213810985609 + 137869630864 = 462397^2 + 371308^2 .

It is an emirp because it is prime and its reverse (374616086153) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 351680616473 - 2¹⁰ = 351680615449 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (351680616433) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175840308236 + 175840308237.

It is an arithmetic number, because the mean of its divisors is an integer number (175840308237).

Almost surely, 2^351680616473 is an apocalyptic number.

It is an amenable number.

351680616473 is a deficient number, since it is larger than the sum of its proper divisors (1).

351680616473 is an equidigital number, since it uses as much as digits as its factorization.

351680616473 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2177280, while the sum is 50.

The spelling of 351680616473 in words is "three hundred fifty-one billion, six hundred eighty million, six hundred sixteen thousand, four hundred seventy-three".