349321665961 has 2 divisors, whose sum is σ = 349321665962. Its totient is φ = 349321665960.

The previous prime is 349321665929. The next prime is 349321665989. The reversal of 349321665961 is 169566123943.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 186489240336 + 162832425625 = 431844^2 + 403525^2 .

It is a cyclic number.

It is not a de Polignac number, because 349321665961 - 2⁵ = 349321665929 is a prime.

It is not a weakly prime, because it can be changed into another prime (349321665911) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174660832980 + 174660832981.

It is an arithmetic number, because the mean of its divisors is an integer number (174660832981).

Almost surely, 2^349321665961 is an apocalyptic number.

It is an amenable number.

349321665961 is a deficient number, since it is larger than the sum of its proper divisors (1).

349321665961 is an equidigital number, since it uses as much as digits as its factorization.

349321665961 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6298560, while the sum is 55.

The spelling of 349321665961 in words is "three hundred forty-nine billion, three hundred twenty-one million, six hundred sixty-five thousand, nine hundred sixty-one".