8447878525868 has 24 divisors (see below), whose sum is σ = 15575262467520. Its totient is φ = 3998185848720.

The previous prime is 8447878525837. The next prime is 8447878525871. The reversal of 8447878525868 is 8685258787448.

It is a junction number, because it is equal to n+sod(n) for n = 8447878525792 and 8447878525801.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47700218 + ... + 47876993.

It is an arithmetic number, because the mean of its divisors is an integer number (648969269480).

Almost surely, 2^{8447878525868} is an apocalyptic number.

It is an amenable number.

8447878525868 is a deficient number, since it is larger than the sum of its proper divisors (7127383941652).

8447878525868 is a wasteful number, since it uses less digits than its factorization.

8447878525868 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 95578397 (or 95578395 counting only the distinct ones).

The product of its digits is 7707033600, while the sum is 80.

The spelling of 8447878525868 in words is "eight trillion, four hundred forty-seven billion, eight hundred seventy-eight million, five hundred twenty-five thousand, eight hundred sixty-eight".