561087747587 has 8 divisors (see below), whose sum is σ = 565390673232. Its totient is φ = 556785122400.

The previous prime is 561087747581. The next prime is 561087747589. The reversal of 561087747587 is 785747780165.

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 561087747587 - 2²⁰ = 561086699011 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (561087747581) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4963637 + ... + 5075417.

It is an arithmetic number, because the mean of its divisors is an integer number (70673834154).

Almost surely, 2^561087747587 is an apocalyptic number.

561087747587 is a deficient number, since it is larger than the sum of its proper divisors (4302925645).

561087747587 is a wasteful number, since it uses less digits than its factorization.

561087747587 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 150229.

The product of its (nonzero) digits is 92198400, while the sum is 65.

The spelling of 561087747587 in words is "five hundred sixty-one billion, eighty-seven million, seven hundred forty-seven thousand, five hundred eighty-seven".