561287688216 has 16 divisors (see below), whose sum is σ = 1403219220600. Its totient is φ = 187095896064.

The previous prime is 561287688083. The next prime is 561287688217. The reversal of 561287688216 is 612886782165.

It is a hoax number, since the sum of its digits (60) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 561287688216.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561287688217) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11693493481 + ... + 11693493528.

Almost surely, 2^561287688216 is an apocalyptic number.

It is an amenable number.

561287688216 is an abundant number, since it is smaller than the sum of its proper divisors (841931532384).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

561287688216 is a wasteful number, since it uses less digits than its factorization.

561287688216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23386987018 (or 23386987014 counting only the distinct ones).

The product of its digits is 15482880, while the sum is 60.

The spelling of 561287688216 in words is "five hundred sixty-one billion, two hundred eighty-seven million, six hundred eighty-eight thousand, two hundred sixteen".