343361162165561 has 2 divisors, whose sum is σ = 343361162165562. Its totient is φ = 343361162165560.

The previous prime is 343361162165467. The next prime is 343361162165621. The reversal of 343361162165561 is 165561261163343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 201403469005561 + 141957693160000 = 14191669^2 + 11914600^2 .

It is a cyclic number.

It is not a de Polignac number, because 343361162165561 - 2³⁴ = 343343982296377 is a prime.

It is a super-3 number, since 3×343361162165561³ (a number of 45 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is not a weakly prime, because it can be changed into another prime (343361164165561) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 171680581082780 + 171680581082781.

It is an arithmetic number, because the mean of its divisors is an integer number (171680581082781).

Almost surely, 2^{343361162165561} is an apocalyptic number.

It is an amenable number.

343361162165561 is a deficient number, since it is larger than the sum of its proper divisors (1).

343361162165561 is an equidigital number, since it uses as much as digits as its factorization.

343361162165561 is an evil number, because the sum of its binary digits is even.

The product of its digits is 6998400, while the sum is 53.

The spelling of 343361162165561 in words is "three hundred forty-three trillion, three hundred sixty-one billion, one hundred sixty-two million, one hundred sixty-five thousand, five hundred sixty-one".