561287688193 has 16 divisors (see below), whose sum is σ = 587861422720. Its totient is φ = 535474364544.

The previous prime is 561287688083. The next prime is 561287688217. The reversal of 561287688193 is 391886782165.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-561287688193 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561287688893) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 544698 + ... + 1191331.

It is an arithmetic number, because the mean of its divisors is an integer number (36741338920).

Almost surely, 2^561287688193 is an apocalyptic number.

It is an amenable number.

561287688193 is a deficient number, since it is larger than the sum of its proper divisors (26573734527).

561287688193 is a wasteful number, since it uses less digits than its factorization.

561287688193 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1736248.

The product of its digits is 34836480, while the sum is 64.

The spelling of 561287688193 in words is "five hundred sixty-one billion, two hundred eighty-seven million, six hundred eighty-eight thousand, one hundred ninety-three".