8518396197685 has 32 divisors (see below), whose sum is σ = 11312589496320. Its totient is φ = 6105686932800.

The previous prime is 8518396197637. The next prime is 8518396197739. The reversal of 8518396197685 is 5867916938158.

It is a happy number.

It is not a de Polignac number, because 8518396197685 - 2¹⁹ = 8518395673397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (31) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 10216554 + ... + 11018836.

It is an arithmetic number, because the mean of its divisors is an integer number (353518421760).

Almost surely, 2^{8518396197685} is an apocalyptic number.

It is an amenable number.

8518396197685 is a deficient number, since it is larger than the sum of its proper divisors (2794193298635).

8518396197685 is a wasteful number, since it uses less digits than its factorization.

8518396197685 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 805089.

The product of its digits is 783820800, while the sum is 76.

The spelling of 8518396197685 in words is "eight trillion, five hundred eighteen billion, three hundred ninety-six million, one hundred ninety-seven thousand, six hundred eighty-five".