6878105136 has 120 divisors (see below), whose sum is σ = 22020165024. Its totient is φ = 1963284480.

The previous prime is 6878105107. The next prime is 6878105137. The reversal of 6878105136 is 6315018786.

6878105136 is a `hidden beast` number, since 68 + 78 + 1 + 0 + 513 + 6 = 666.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 6878105091 and 6878105100.

It is not an unprimeable number, because it can be changed into a prime (6878105137) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1304746 + ... + 1310006.

Almost surely, 2^6878105136 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 6878105136, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (11010082512).

6878105136 is an abundant number, since it is smaller than the sum of its proper divisors (15142059888).

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

6878105136 is a wasteful number, since it uses less digits than its factorization.

6878105136 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6579 (or 6570 counting only the distinct ones).

The product of its (nonzero) digits is 241920, while the sum is 45.

The square root of 6878105136 is about 82934.3423196929. The cubic root of 6878105136 is about 1901.7624584344.

The spelling of 6878105136 in words is "six billion, eight hundred seventy-eight million, one hundred five thousand, one hundred thirty-six".