5161005056513 has 4 divisors (see below), whose sum is σ = 5300491679700. Its totient is φ = 5021518433328.

The previous prime is 5161005056509. The next prime is 5161005056561. The reversal of 5161005056513 is 3156505001615.

5161005056513 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 4980828577729 + 180176478784 = 2231777^2 + 424472^2 .

It is a cyclic number.

It is not a de Polignac number, because 5161005056513 - 2² = 5161005056509 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 (5161005056503) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 69743311538 + ... + 69743311611.

It is an arithmetic number, because the mean of its divisors is an integer number (1325122919925).

Almost surely, 2^{5161005056513} is an apocalyptic number.

It is an amenable number.

5161005056513 is a deficient number, since it is larger than the sum of its proper divisors (139486623187).

5161005056513 is a wasteful number, since it uses less digits than its factorization.

5161005056513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 139486623186.

The product of its (nonzero) digits is 67500, while the sum is 38.

The spelling of 5161005056513 in words is "five trillion, one hundred sixty-one billion, five million, fifty-six thousand, five hundred thirteen".