349980407702161 has 2 divisors, whose sum is σ = 349980407702162. Its totient is φ = 349980407702160.

The previous prime is 349980407702083. The next prime is 349980407702197. The reversal of 349980407702161 is 161207704089943.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 325068639715600 + 24911767986561 = 18029660^2 + 4991169^2 .

It is a cyclic number.

It is not a de Polignac number, because 349980407702161 - 2⁹ = 349980407701649 is a prime.

It is a super-2 number, since 2×349980407702161² (a number of 30 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 349980407702161.

It is not a weakly prime, because it can be changed into another prime (349980407709161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174990203851080 + 174990203851081.

It is an arithmetic number, because the mean of its divisors is an integer number (174990203851081).

Almost surely, 2^{349980407702161} is an apocalyptic number.

It is an amenable number.

349980407702161 is a deficient number, since it is larger than the sum of its proper divisors (1).

349980407702161 is an equidigital number, since it uses as much as digits as its factorization.

349980407702161 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18289152, while the sum is 61.

The spelling of 349980407702161 in words is "three hundred forty-nine trillion, nine hundred eighty billion, four hundred seven million, seven hundred two thousand, one hundred sixty-one".