10644106321 has 4 divisors (see below), whose sum is σ = 11011144500. Its totient is φ = 10277068144.

The previous prime is 10644106273. The next prime is 10644106327. The reversal of 10644106321 is 12360144601.

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 2528078400 + 8116027921 = 50280^2 + 90089^2 .

It is a cyclic number.

It is not a de Polignac number, because 10644106321 - 2⁹ = 10644105809 is a prime.

It is a super-2 number, since 2×10644106321² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 10644106321.

It is not an unprimeable number, because it can be changed into a prime (10644106327) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 183519046 + ... + 183519103.

It is an arithmetic number, because the mean of its divisors is an integer number (2752786125).

Almost surely, 2^10644106321 is an apocalyptic number.

It is an amenable number.

10644106321 is a deficient number, since it is larger than the sum of its proper divisors (367038179).

10644106321 is an equidigital number, since it uses as much as digits as its factorization.

10644106321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 367038178.

The product of its (nonzero) digits is 3456, while the sum is 28.

The spelling of 10644106321 in words is "ten billion, six hundred forty-four million, one hundred six thousand, three hundred twenty-one".