8078138265 has 8 divisors (see below), whose sum is σ = 12925021248. Its totient is φ = 4308340400.

The previous prime is 8078138219. The next prime is 8078138291. The reversal of 8078138265 is 5628318708.

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

It is not a de Polignac number, because 8078138265 - 2¹⁰ = 8078137241 is a prime.

It is a Curzon number.

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, 269271261 + ... + 269271290.

It is an arithmetic number, because the mean of its divisors is an integer number (1615627656).

Almost surely, 2^8078138265 is an apocalyptic number.

It is an amenable number.

8078138265 is a deficient number, since it is larger than the sum of its proper divisors (4846882983).

8078138265 is a wasteful number, since it uses less digits than its factorization.

8078138265 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 538542559.

The product of its (nonzero) digits is 645120, while the sum is 48.

The square root of 8078138265 is about 89878.4638553642. The cubic root of 8078138265 is about 2006.4904364163.

The spelling of 8078138265 in words is "eight billion, seventy-eight million, one hundred thirty-eight thousand, two hundred sixty-five".