10643310534365 has 4 divisors (see below), whose sum is σ = 12771972641244. Its totient is φ = 8514648427488.

The previous prime is 10643310534299. The next prime is 10643310534371. The reversal of 10643310534365 is 56343501334601.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 8242859197444 + 2400451336921 = 2871038^2 + 1549339^2 .

It is a cyclic number.

It is not a de Polignac number, because 10643310534365 - 2²⁰ = 10643309485789 is a prime.

It is a super-2 number, since 2×10643310534365² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1064331053432 + ... + 1064331053441.

It is an arithmetic number, because the mean of its divisors is an integer number (3192993160311).

Almost surely, 2^{10643310534365} is an apocalyptic number.

It is an amenable number.

10643310534365 is a deficient number, since it is larger than the sum of its proper divisors (2128662106879).

10643310534365 is an equidigital number, since it uses as much as digits as its factorization.

10643310534365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128662106878.

The product of its (nonzero) digits is 1166400, while the sum is 44.

Adding to 10643310534365 its reverse (56343501334601), we get a palindrome (66986811868966).

The spelling of 10643310534365 in words is "ten trillion, six hundred forty-three billion, three hundred ten million, five hundred thirty-four thousand, three hundred sixty-five".