2645744365543 has 8 divisors (see below), whose sum is σ = 2655886161600. Its totient is φ = 2635610134368.

The previous prime is 2645744365489. The next prime is 2645744365549. The reversal of 2645744365543 is 3455634475462.

2645744365543 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2645744365543 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 (2645744365549) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1189903 + ... + 2589856.

It is an arithmetic number, because the mean of its divisors is an integer number (331985770200).

Almost surely, 2^{2645744365543} is an apocalyptic number.

2645744365543 is a deficient number, since it is larger than the sum of its proper divisors (10141796057).

2645744365543 is a wasteful number, since it uses less digits than its factorization.

2645744365543 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3782441.

The product of its digits is 145152000, while the sum is 58.

The spelling of 2645744365543 in words is "two trillion, six hundred forty-five billion, seven hundred forty-four million, three hundred sixty-five thousand, five hundred forty-three".