8387867747987 has 16 divisors (see below), whose sum is σ = 10339584864000. Its totient is φ = 6626233419552.

The previous prime is 8387867747947. The next prime is 8387867748017. The reversal of 8387867747987 is 7897477687838.

It is a cyclic number.

It is not a de Polignac number, because 8387867747987 - 2⁶ = 8387867747923 is a prime.

It is not an unprimeable number, because it can be changed into a prime (8387867747947) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 71616737 + ... + 71733762.

It is an arithmetic number, because the mean of its divisors is an integer number (646224054000).

Almost surely, 2^{8387867747987} is an apocalyptic number.

8387867747987 is a deficient number, since it is larger than the sum of its proper divisors (1951717116013).

8387867747987 is a wasteful number, since it uses less digits than its factorization.

8387867747987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143351162.

The product of its digits is 44609273856, while the sum is 89.

The spelling of 8387867747987 in words is "eight trillion, three hundred eighty-seven billion, eight hundred sixty-seven million, seven hundred forty-seven thousand, nine hundred eighty-seven".