5661056615545 has 8 divisors (see below), whose sum is σ = 6793280709696. Its totient is φ = 4528836778416.

The previous prime is 5661056615509. The next prime is 5661056615581. The reversal of 5661056615545 is 5455166501665.

It is an interprime number because it is at equal distance from previous prime (5661056615509) and next prime (5661056615581).

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 5661056615545 - 2¹⁵ = 5661056582777 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4676004 + ... + 5760826.

It is an arithmetic number, because the mean of its divisors is an integer number (849160088712).

Almost surely, 2^{5661056615545} is an apocalyptic number.

It is an amenable number.

5661056615545 is a deficient number, since it is larger than the sum of its proper divisors (1132224094151).

5661056615545 is a wasteful number, since it uses less digits than its factorization.

5661056615545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2128511.

The product of its (nonzero) digits is 16200000, while the sum is 55.

The spelling of 5661056615545 in words is "five trillion, six hundred sixty-one billion, fifty-six million, six hundred fifteen thousand, five hundred forty-five".