345531344542169 has 2 divisors, whose sum is σ = 345531344542170. Its totient is φ = 345531344542168.

The previous prime is 345531344542157. The next prime is 345531344542231. The reversal of 345531344542169 is 961245443135543.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 273580862478400 + 71950482063769 = 16540280^2 + 8482363^2 .

It is an emirp because it is prime and its reverse (961245443135543) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-345531344542169 is a prime.

It is a super-2 number, since 2×345531344542169² (a number of 30 digits) contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (345531344542369) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 172765672271084 + 172765672271085.

It is an arithmetic number, because the mean of its divisors is an integer number (172765672271085).

Almost surely, 2^{345531344542169} is an apocalyptic number.

It is an amenable number.

345531344542169 is a deficient number, since it is larger than the sum of its proper divisors (1).

345531344542169 is an equidigital number, since it uses as much as digits as its factorization.

345531344542169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 93312000, while the sum is 59.

The spelling of 345531344542169 in words is "three hundred forty-five trillion, five hundred thirty-one billion, three hundred forty-four million, five hundred forty-two thousand, one hundred sixty-nine".