561143635445 has 16 divisors (see below), whose sum is σ = 695626126848. Its totient is φ = 434101235520.

The previous prime is 561143635421. The next prime is 561143635471. The reversal of 561143635445 is 544536341165.

561143635445 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 561143635445 - 2²⁰ = 561142586869 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 561143635445.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1182374 + ... + 1587543.

It is an arithmetic number, because the mean of its divisors is an integer number (43476632928).

Almost surely, 2^561143635445 is an apocalyptic number.

It is an amenable number.

561143635445 is a deficient number, since it is larger than the sum of its proper divisors (134482491403).

561143635445 is a wasteful number, since it uses less digits than its factorization.

561143635445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2771260.

The product of its digits is 2592000, while the sum is 47.

The spelling of 561143635445 in words is "five hundred sixty-one billion, one hundred forty-three million, six hundred thirty-five thousand, four hundred forty-five".