8046640578 has 16 divisors (see below), whose sum is σ = 16153110720. Its totient is φ = 2672241936.

The previous prime is 8046640577. The next prime is 8046640603. The reversal of 8046640578 is 8750466408.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (8046640577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2491150 + ... + 2494377.

It is an arithmetic number, because the mean of its divisors is an integer number (1009569420).

Almost surely, 2^8046640578 is an apocalyptic number.

8046640578 is an abundant number, since it is smaller than the sum of its proper divisors (8106470142).

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

8046640578 is a wasteful number, since it uses less digits than its factorization.

8046640578 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4985801.

The product of its (nonzero) digits is 1290240, while the sum is 48.

The square root of 8046640578 is about 89703.0689441560. The cubic root of 8046640578 is about 2003.8791859271.

The spelling of 8046640578 in words is "eight billion, forty-six million, six hundred forty thousand, five hundred seventy-eight".