8213852718855 has 64 divisors (see below), whose sum is σ = 16741108270080. Its totient is φ = 3743058840192.

The previous prime is 8213852718811. The next prime is 8213852718859. The reversal of 8213852718855 is 5588172583128.

8213852718855 is a `hidden beast` number, since 8 + 2 + 1 + 385 + 27 + 188 + 55 = 666.

It is not a de Polignac number, because 8213852718855 - 2¹⁰ = 8213852717831 is a prime.

It is a super-2 number, since 2×8213852718855² (a number of 27 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63).

It is a junction number, because it is equal to n+sod(n) for n = 8213852718792 and 8213852718801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8213852718859) 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 63 ways as a sum of consecutive naturals, for example, 13410069 + ... + 14009198.

It is an arithmetic number, because the mean of its divisors is an integer number (261579816720).

Almost surely, 2^{8213852718855} is an apocalyptic number.

8213852718855 is an abundant number, since it is smaller than the sum of its proper divisors (8527255551225).

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

8213852718855 is a wasteful number, since it uses less digits than its factorization.

8213852718855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27419605 (or 27419599 counting only the distinct ones).

The product of its digits is 43008000, while the sum is 63.

The spelling of 8213852718855 in words is "eight trillion, two hundred thirteen billion, eight hundred fifty-two million, seven hundred eighteen thousand, eight hundred fifty-five".