351680616197 has 2 divisors, whose sum is σ = 351680616198. Its totient is φ = 351680616196.

The previous prime is 351680616191. The next prime is 351680616233. The reversal of 351680616197 is 791616086153.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 240854211361 + 110826404836 = 490769^2 + 332906^2 .

It is a cyclic number.

It is not a de Polignac number, because 351680616197 - 2¹⁰ = 351680615173 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (351680616191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 175840308098 + 175840308099.

It is an arithmetic number, because the mean of its divisors is an integer number (175840308099).

Almost surely, 2^351680616197 is an apocalyptic number.

It is an amenable number.

351680616197 is a deficient number, since it is larger than the sum of its proper divisors (1).

351680616197 is an equidigital number, since it uses as much as digits as its factorization.

351680616197 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1632960, while the sum is 53.

The spelling of 351680616197 in words is "three hundred fifty-one billion, six hundred eighty million, six hundred sixteen thousand, one hundred ninety-seven".