8272645371918 has 32 divisors (see below), whose sum is σ = 18460575475200. Its totient is φ = 2746010593368.

The previous prime is 8272645371889. The next prime is 8272645371953. The reversal of 8272645371918 is 8191735462728.

8272645371918 is a `hidden beast` number, since 8 + 2 + 7 + 2 + 6 + 4 + 537 + 1 + 91 + 8 = 666.

It is a super-2 number, since 2×8272645371918² (a number of 27 digits) contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 320483196 + ... + 320509007.

It is an arithmetic number, because the mean of its divisors is an integer number (576892983600).

Almost surely, 2^{8272645371918} is an apocalyptic number.

8272645371918 is an abundant number, since it is smaller than the sum of its proper divisors (10187930103282).

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

8272645371918 is a wasteful number, since it uses less digits than its factorization.

8272645371918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 640992453 (or 640992447 counting only the distinct ones).

The product of its digits is 40642560, while the sum is 63.

The spelling of 8272645371918 in words is "eight trillion, two hundred seventy-two billion, six hundred forty-five million, three hundred seventy-one thousand, nine hundred eighteen".