10644843091 has 4 divisors (see below), whose sum is σ = 10652914800. Its totient is φ = 10636771384.

The previous prime is 10644843031. The next prime is 10644843107. The reversal of 10644843091 is 19034844601.

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

It is a cyclic number.

It is not a de Polignac number, because 10644843091 - 2¹¹ = 10644841043 is a prime.

It is a super-2 number, since 2×10644843091² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (10644843031) 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, 4033876 + ... + 4036513.

It is an arithmetic number, because the mean of its divisors is an integer number (2663228700).

Almost surely, 2^10644843091 is an apocalyptic number.

10644843091 is a deficient number, since it is larger than the sum of its proper divisors (8071709).

10644843091 is an equidigital number, since it uses as much as digits as its factorization.

10644843091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8071708.

The product of its (nonzero) digits is 82944, while the sum is 40.

The spelling of 10644843091 in words is "ten billion, six hundred forty-four million, eight hundred forty-three thousand, ninety-one".