561604107487 has 4 divisors (see below), whose sum is σ = 568713020320. Its totient is φ = 554495194656.

The previous prime is 561604107481. The next prime is 561604107503. The reversal of 561604107487 is 784701406165.

It is a happy number.

561604107487 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 561604107487 - 2¹⁹ = 561603583199 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 561604107487.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (561604107481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3554456298 + ... + 3554456455.

It is an arithmetic number, because the mean of its divisors is an integer number (142178255080).

Almost surely, 2^561604107487 is an apocalyptic number.

561604107487 is a deficient number, since it is larger than the sum of its proper divisors (7108912833).

561604107487 is an equidigital number, since it uses as much as digits as its factorization.

561604107487 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7108912832.

The product of its (nonzero) digits is 1128960, while the sum is 49.

The spelling of 561604107487 in words is "five hundred sixty-one billion, six hundred four million, one hundred seven thousand, four hundred eighty-seven".