5055005105561 has 4 divisors (see below), whose sum is σ = 5101381299300. Its totient is φ = 5008628911824.

The previous prime is 5055005105539. The next prime is 5055005105581. The reversal of 5055005105561 is 1655015005505.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 2218327254025 + 2836677851536 = 1489405^2 + 1684244^2 .

It is a cyclic number.

It is not a de Polignac number, because 5055005105561 - 2²⁶ = 5054937996697 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (5055005105581) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 23188096706 + ... + 23188096923.

It is an arithmetic number, because the mean of its divisors is an integer number (1275345324825).

Almost surely, 2^{5055005105561} is an apocalyptic number.

It is an amenable number.

5055005105561 is a deficient number, since it is larger than the sum of its proper divisors (46376193739).

5055005105561 is a wasteful number, since it uses less digits than its factorization.

5055005105561 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46376193738.

The product of its (nonzero) digits is 93750, while the sum is 38.

The spelling of 5055005105561 in words is "five trillion, fifty-five billion, five million, one hundred five thousand, five hundred sixty-one".