5645640305441 has 4 divisors (see below), whose sum is σ = 5752161820692. Its totient is φ = 5539118790192.

The previous prime is 5645640305423. The next prime is 5645640305491. The reversal of 5645640305441 is 1445030465465.

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 3998884077841 + 1646756227600 = 1999721^2 + 1283260^2 .

It is a cyclic number.

It is not a de Polignac number, because 5645640305441 - 2¹⁰ = 5645640304417 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5645640305491) 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, 53260757546 + ... + 53260757651.

It is an arithmetic number, because the mean of its divisors is an integer number (1438040455173).

Almost surely, 2^{5645640305441} is an apocalyptic number.

It is an amenable number.

5645640305441 is a deficient number, since it is larger than the sum of its proper divisors (106521515251).

5645640305441 is a wasteful number, since it uses less digits than its factorization.

5645640305441 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106521515250.

The product of its (nonzero) digits is 3456000, while the sum is 47.

The spelling of 5645640305441 in words is "five trillion, six hundred forty-five billion, six hundred forty million, three hundred five thousand, four hundred forty-one".