5187872787815 has 4 divisors (see below), whose sum is σ = 6225447345384. Its totient is φ = 4150298230248.

The previous prime is 5187872787803. The next prime is 5187872787829.

5187872787815 is nontrivially palindromic in base 10.

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

It is a cyclic number.

It is not a de Polignac number, because 5187872787815 - 2¹⁰ = 5187872786791 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 518787278777 + ... + 518787278786.

It is an arithmetic number, because the mean of its divisors is an integer number (1556361836346).

Almost surely, 2^{5187872787815} is an apocalyptic number.

5187872787815 is a deficient number, since it is larger than the sum of its proper divisors (1037574557569).

5187872787815 is a wasteful number, since it uses less digits than its factorization.

5187872787815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1037574557568.

The product of its digits is 491724800, while the sum is 74.

The spelling of 5187872787815 in words is "five trillion, one hundred eighty-seven billion, eight hundred seventy-two million, seven hundred eighty-seven thousand, eight hundred fifteen".