349501565669 has 2 divisors, whose sum is σ = 349501565670. Its totient is φ = 349501565668.

The previous prime is 349501565653. The next prime is 349501565687. The reversal of 349501565669 is 966565105943.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 300599992900 + 48901572769 = 548270^2 + 221137^2 .

It is a cyclic number.

It is not a de Polignac number, because 349501565669 - 2⁴ = 349501565653 is a prime.

It is a super-2 number, since 2×349501565669² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (349501565689) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 174750782834 + 174750782835.

It is an arithmetic number, because the mean of its divisors is an integer number (174750782835).

Almost surely, 2^349501565669 is an apocalyptic number.

It is an amenable number.

349501565669 is a deficient number, since it is larger than the sum of its proper divisors (1).

349501565669 is an equidigital number, since it uses as much as digits as its factorization.

349501565669 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 26244000, while the sum is 59.

The spelling of 349501565669 in words is "three hundred forty-nine billion, five hundred one million, five hundred sixty-five thousand, six hundred sixty-nine".