6887572657887 has 16 divisors (see below), whose sum is σ = 9231065804160. Its totient is φ = 4567947296352.

The previous prime is 6887572657877. The next prime is 6887572657891. The reversal of 6887572657887 is 7887562757886.

It is not a de Polignac number, because 6887572657887 - 2¹¹ = 6887572655839 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (6887572657877) 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, 5696833 + ... + 6799194.

It is an arithmetic number, because the mean of its divisors is an integer number (576941612760).

Almost surely, 2^{6887572657887} is an apocalyptic number.

6887572657887 is a deficient number, since it is larger than the sum of its proper divisors (2343493146273).

6887572657887 is a wasteful number, since it uses less digits than its factorization.

6887572657887 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12496982.

The product of its digits is 17702092800, while the sum is 84.

Subtracting 6887572657887 from its reverse (7887562757886), we obtain a palindrome (999990099999).

The spelling of 6887572657887 in words is "six trillion, eight hundred eighty-seven billion, five hundred seventy-two million, six hundred fifty-seven thousand, eight hundred eighty-seven".