10645350716321 has 4 divisors (see below), whose sum is σ = 10645360168212. Its totient is φ = 10645341264432.

The previous prime is 10645350716311. The next prime is 10645350716333. The reversal of 10645350716321 is 12361705354601.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 3197172868096 + 7448177848225 = 1788064^2 + 2729135^2 .

It is a cyclic number.

It is not a de Polignac number, because 10645350716321 - 2¹⁰ = 10645350715297 is a prime.

It is a super-2 number, since 2×10645350716321² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10645350716311) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2765450 + ... + 5379443.

It is an arithmetic number, because the mean of its divisors is an integer number (2661340042053).

Almost surely, 2^{10645350716321} is an apocalyptic number.

It is an amenable number.

10645350716321 is a deficient number, since it is larger than the sum of its proper divisors (9451891).

10645350716321 is an equidigital number, since it uses as much as digits as its factorization.

10645350716321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9451890.

The product of its (nonzero) digits is 453600, while the sum is 44.

The spelling of 10645350716321 in words is "ten trillion, six hundred forty-five billion, three hundred fifty million, seven hundred sixteen thousand, three hundred twenty-one".