500051005561 has 8 divisors (see below), whose sum is σ = 529471987200. Its totient is φ = 470630714688.

The previous prime is 500051005529. The next prime is 500051005621. The reversal of 500051005561 is 165500150005.

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 500051005561 - 2⁵ = 500051005529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (500051005511) 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, 2497240 + ... + 2690038.

It is an arithmetic number, because the mean of its divisors is an integer number (66183998400).

Almost surely, 2^500051005561 is an apocalyptic number.

It is an amenable number.

500051005561 is a deficient number, since it is larger than the sum of its proper divisors (29420981639).

500051005561 is a wasteful number, since it uses less digits than its factorization.

500051005561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 345383.

The product of its (nonzero) digits is 3750, while the sum is 28.

Adding to 500051005561 its reverse (165500150005), we get a palindrome (665551155566).

The spelling of 500051005561 in words is "five hundred billion, fifty-one million, five thousand, five hundred sixty-one".