5000001000561 has 16 divisors (see below), whose sum is σ = 8465610160000. Its totient is φ = 2857143428784.

The previous prime is 5000001000503. The next prime is 5000001000563. The reversal of 5000001000561 is 1650001000005.

5000001000561 is a `hidden beast` number, since 5 + 0 + 0 + 0 + 0 + 0 + 100 + 0 + 561 = 666.

It is not a de Polignac number, because 5000001000561 - 2⁶ = 5000001000497 is a prime.

It is a super-2 number, since 2×5000001000561² (a number of 26 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (5000001000563) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13227515686 + ... + 13227516063.

It is an arithmetic number, because the mean of its divisors is an integer number (529100635000).

Almost surely, 2^{5000001000561} is an apocalyptic number.

It is an amenable number.

5000001000561 is a deficient number, since it is larger than the sum of its proper divisors (3465609159439).

5000001000561 is a wasteful number, since it uses less digits than its factorization.

5000001000561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26455031765 (or 26455031759 counting only the distinct ones).

The product of its (nonzero) digits is 150, while the sum is 18.

Adding to 5000001000561 its reverse (1650001000005), we get a palindrome (6650002000566).

The spelling of 5000001000561 in words is "five trillion, one million, five hundred sixty-one", and thus it is an aban number.