55005050000561 has 16 divisors (see below), whose sum is σ = 57026498672640. Its totient is φ = 52999384570560.

The previous prime is 55005050000507. The next prime is 55005050000569. The reversal of 55005050000561 is 16500005050055.

55005050000561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-55005050000561 is a prime.

It is a super-2 number, since 2×55005050000561² (a number of 28 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (55005050000569) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6877256 + ... + 12542198.

It is an arithmetic number, because the mean of its divisors is an integer number (3564156167040).

Almost surely, 2^{55005050000561} is an apocalyptic number.

It is an amenable number.

55005050000561 is a deficient number, since it is larger than the sum of its proper divisors (2021448672079).

55005050000561 is a wasteful number, since it uses less digits than its factorization.

55005050000561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5666336.

The product of its (nonzero) digits is 18750, while the sum is 32.

The spelling of 55005050000561 in words is "fifty-five trillion, five billion, fifty million, five hundred sixty-one", and thus it is an aban number.