8155795878 has 48 divisors (see below), whose sum is σ = 18334492176. Its totient is φ = 2717245440.

The previous prime is 8155795861. The next prime is 8155795897. The reversal of 8155795878 is 8785975518.

8155795878 is a `hidden beast` number, since 8 + 1 + 5 + 579 + 58 + 7 + 8 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1630950 + ... + 1635942.

It is an arithmetic number, because the mean of its divisors is an integer number (381968587).

Almost surely, 2^8155795878 is an apocalyptic number.

8155795878 is an abundant number, since it is smaller than the sum of its proper divisors (10178696298).

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

8155795878 is a wasteful number, since it uses less digits than its factorization.

8155795878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8371 (or 8359 counting only the distinct ones).

The product of its digits is 28224000, while the sum is 63.

The square root of 8155795878 is about 90309.4451206517. The cubic root of 8155795878 is about 2012.8996109771.

The spelling of 8155795878 in words is "eight billion, one hundred fifty-five million, seven hundred ninety-five thousand, eight hundred seventy-eight".