5665561115503 has 4 divisors (see below), whose sum is σ = 5670399341368. Its totient is φ = 5660722889640.

The previous prime is 5665561115377. The next prime is 5665561115549. The reversal of 5665561115503 is 3055111655665.

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 5665561115503 - 2²¹ = 5665559018351 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 (5665561115303) 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, 2419111176 + ... + 2419113517.

It is an arithmetic number, because the mean of its divisors is an integer number (1417599835342).

Almost surely, 2^{5665561115503} is an apocalyptic number.

5665561115503 is a deficient number, since it is larger than the sum of its proper divisors (4838225865).

5665561115503 is a wasteful number, since it uses less digits than its factorization.

5665561115503 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4838225864.

The product of its (nonzero) digits is 2025000, while the sum is 49.

The spelling of 5665561115503 in words is "five trillion, six hundred sixty-five billion, five hundred sixty-one million, one hundred fifteen thousand, five hundred three".