8686855849455 has 96 divisors (see below), whose sum is σ = 18362082186240. Its totient is φ = 3710590871040.

The previous prime is 8686855849409. The next prime is 8686855849459. The reversal of 8686855849455 is 5549485586868.

8686855849455 is a `hidden beast` number, since 8 + 6 + 8 + 6 + 8 + 558 + 4 + 9 + 4 + 55 = 666.

It is not a de Polignac number, because 8686855849455 - 2⁶ = 8686855849391 is a prime.

It is a super-3 number, since 3×8686855849455³ (a number of 40 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8686855849459) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 9504451 + ... + 10378260.

It is an arithmetic number, because the mean of its divisors is an integer number (191271689440).

Almost surely, 2^{8686855849455} is an apocalyptic number.

8686855849455 is an abundant number, since it is smaller than the sum of its proper divisors (9675226336785).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

8686855849455 is a wasteful number, since it uses less digits than its factorization.

8686855849455 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19882821 (or 19882818 counting only the distinct ones).

The product of its digits is 13271040000, while the sum is 81.

The spelling of 8686855849455 in words is "eight trillion, six hundred eighty-six billion, eight hundred fifty-five million, eight hundred forty-nine thousand, four hundred fifty-five".