2644005436349 has 8 divisors (see below), whose sum is σ = 2651942246400. Its totient is φ = 2636076970800.

The previous prime is 2644005436313. The next prime is 2644005436433. The reversal of 2644005436349 is 9436345004462.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2644005436349 - 2⁴⁰ = 1544493808573 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2644005436297 and 2644005436306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2644005436309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1451174 + ... + 2719175.

It is an arithmetic number, because the mean of its divisors is an integer number (331492780800).

Almost surely, 2^{2644005436349} is an apocalyptic number.

It is an amenable number.

2644005436349 is a deficient number, since it is larger than the sum of its proper divisors (7936810051).

2644005436349 is a wasteful number, since it uses less digits than its factorization.

2644005436349 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4172251.

The product of its (nonzero) digits is 7464960, while the sum is 50.

The spelling of 2644005436349 in words is "two trillion, six hundred forty-four billion, five million, four hundred thirty-six thousand, three hundred forty-nine".