8538895687842 has 640 divisors, whose sum is σ = 23275885248000. Its totient is φ = 2314152529920.

The previous prime is 8538895687813. The next prime is 8538895687853. The reversal of 8538895687842 is 2487865988358.

It is a happy number.

8538895687842 is a `hidden beast` number, since 8 + 5 + 3 + 8 + 8 + 9 + 568 + 7 + 8 + 42 = 666.

It is a Harshad number since it is a multiple of its sum of digits (81).

It is an unprimeable number.

It is a polite number, since it can be written in 319 ways as a sum of consecutive naturals, for example, 4996427284 + ... + 4996428992.

It is an arithmetic number, because the mean of its divisors is an integer number (36368570700).

Almost surely, 2^{8538895687842} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 8538895687842, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11637942624000).

8538895687842 is an abundant number, since it is smaller than the sum of its proper divisors (14736989560158).

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

8538895687842 is a wasteful number, since it uses less digits than its factorization.

8538895687842 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1928 (or 1919 counting only the distinct ones).

The product of its digits is 7431782400, while the sum is 81.

The spelling of 8538895687842 in words is "eight trillion, five hundred thirty-eight billion, eight hundred ninety-five million, six hundred eighty-seven thousand, eight hundred forty-two".