8387865866503 has 8 divisors (see below), whose sum is σ = 8398285339536. Its totient is φ = 8377452864000.

The previous prime is 8387865866491. The next prime is 8387865866531. The reversal of 8387865866503 is 3056685687838.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8387865866503 - 2¹³ = 8387865858311 is a prime.

It is a super-2 number, since 2×8387865866503² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8387865866533) 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 7 ways as a sum of consecutive naturals, for example, 979200 + ... + 4211242.

It is an arithmetic number, because the mean of its divisors is an integer number (1049785667442).

Almost surely, 2^{8387865866503} is an apocalyptic number.

8387865866503 is a deficient number, since it is larger than the sum of its proper divisors (10419473033).

8387865866503 is a wasteful number, since it uses less digits than its factorization.

8387865866503 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3235265.

The product of its (nonzero) digits is 1393459200, while the sum is 73.

The spelling of 8387865866503 in words is "eight trillion, three hundred eighty-seven billion, eight hundred sixty-five million, eight hundred sixty-six thousand, five hundred three".