561134560506 has 64 divisors (see below), whose sum is σ = 1238547015552. Its totient is φ = 168390254592.

The previous prime is 561134560403. The next prime is 561134560543. The reversal of 561134560506 is 605065431165.

561134560506 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2132946 + ... + 2381538.

It is an arithmetic number, because the mean of its divisors is an integer number (19352297118).

Almost surely, 2^561134560506 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 561134560506, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (619273507776).

561134560506 is an abundant number, since it is smaller than the sum of its proper divisors (677412455046).

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

561134560506 is a wasteful number, since it uses less digits than its factorization.

561134560506 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 249327.

The product of its (nonzero) digits is 324000, while the sum is 42.

The spelling of 561134560506 in words is "five hundred sixty-one billion, one hundred thirty-four million, five hundred sixty thousand, five hundred six".