11344645621 has 4 divisors (see below), whose sum is σ = 11384732992. Its totient is φ = 11304558252.

The previous prime is 11344645607. The next prime is 11344645643. The reversal of 11344645621 is 12654644311.

11344645621 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 11344645621 - 2¹¹ = 11344643573 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11344640621) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 20043261 + ... + 20043826.

It is an arithmetic number, because the mean of its divisors is an integer number (2846183248).

Almost surely, 2^11344645621 is an apocalyptic number.

It is an amenable number.

11344645621 is a deficient number, since it is larger than the sum of its proper divisors (40087371).

11344645621 is an equidigital number, since it uses as much as digits as its factorization.

11344645621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40087370.

The product of its digits is 69120, while the sum is 37.

The spelling of 11344645621 in words is "eleven billion, three hundred forty-four million, six hundred forty-five thousand, six hundred twenty-one".