561050500506 has 32 divisors (see below), whose sum is σ = 1239763771008. Its totient is φ = 168362979840.

The previous prime is 561050500457. The next prime is 561050500541. The reversal of 561050500506 is 605005050165.

It is a Curzon number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 119573635 + ... + 119578326.

It is an arithmetic number, because the mean of its divisors is an integer number (38742617844).

Almost surely, 2^561050500506 is an apocalyptic number.

561050500506 is an abundant number, since it is smaller than the sum of its proper divisors (678713270502).

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

561050500506 is a wasteful number, since it uses less digits than its factorization.

561050500506 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 239152006.

The product of its (nonzero) digits is 22500, while the sum is 33.

The spelling of 561050500506 in words is "five hundred sixty-one billion, fifty million, five hundred thousand, five hundred six".