8001578813 has 8 divisors (see below), whose sum is σ = 8788920000. Its totient is φ = 7250858208.

The previous prime is 8001578807. The next prime is 8001578821. The reversal of 8001578813 is 3188751008.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 8001578813 - 2⁴ = 8001578797 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8001578833) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9154688 + ... + 9155561.

It is an arithmetic number, because the mean of its divisors is an integer number (1098615000).

Almost surely, 2^8001578813 is an apocalyptic number.

It is an amenable number.

8001578813 is a deficient number, since it is larger than the sum of its proper divisors (787341187).

8001578813 is a wasteful number, since it uses less digits than its factorization.

8001578813 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18310291.

The product of its (nonzero) digits is 53760, while the sum is 41.

The square root of 8001578813 is about 89451.5444975658. The cubic root of 8001578813 is about 2000.1315590959.

The spelling of 8001578813 in words is "eight billion, one million, five hundred seventy-eight thousand, eight hundred thirteen".