5500561161565 has 4 divisors (see below), whose sum is σ = 6600673393884. Its totient is φ = 4400448929248.

The previous prime is 5500561161497. The next prime is 5500561161581. The reversal of 5500561161565 is 5651611650055.

It is a happy number.

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 820317849796 + 4680243311769 = 905714^2 + 2163387^2 .

It is a cyclic number.

It is not a de Polignac number, because 5500561161565 - 2¹⁷ = 5500561030493 is a prime.

It is a super-3 number, since 3×5500561161565³ (a number of 39 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 550056116152 + ... + 550056116161.

It is an arithmetic number, because the mean of its divisors is an integer number (1650168348471).

Almost surely, 2^{5500561161565} is an apocalyptic number.

It is an amenable number.

5500561161565 is a deficient number, since it is larger than the sum of its proper divisors (1100112232319).

5500561161565 is a wasteful number, since it uses less digits than its factorization.

5500561161565 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1100112232318.

The product of its (nonzero) digits is 675000, while the sum is 46.

The spelling of 5500561161565 in words is "five trillion, five hundred billion, five hundred sixty-one million, one hundred sixty-one thousand, five hundred sixty-five".