343513746661 has 4 divisors (see below), whose sum is σ = 355359048300. Its totient is φ = 331668445024.

The previous prime is 343513746649. The next prime is 343513746673. The reversal of 343513746661 is 166647315343.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 166647315343 = 58043 ⋅2871101.

It is an interprime number because it is at equal distance from previous prime (343513746649) and next prime (343513746673).

It can be written as a sum of positive squares in 2 ways, for example, as 267133922500 + 76379824161 = 516850^2 + 276369^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-343513746661 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (343513746461) 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 in 3 ways as a sum of consecutive naturals, for example, 5922650776 + ... + 5922650833.

It is an arithmetic number, because the mean of its divisors is an integer number (88839762075).

Almost surely, 2^343513746661 is an apocalyptic number.

It is an amenable number.

343513746661 is a deficient number, since it is larger than the sum of its proper divisors (11845301639).

343513746661 is a wasteful number, since it uses less digits than its factorization.

343513746661 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11845301638.

The product of its digits is 3265920, while the sum is 49.

The spelling of 343513746661 in words is "three hundred forty-three billion, five hundred thirteen million, seven hundred forty-six thousand, six hundred sixty-one".