5128878913 has 8 divisors (see below), whose sum is σ = 5292469760. Its totient is φ = 4966602480.

The previous prime is 5128878889. The next prime is 5128878919. The reversal of 5128878913 is 3198788215.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-5128878913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (5128878919) 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, 320673 + ... + 336286.

It is an arithmetic number, because the mean of its divisors is an integer number (661558720).

Almost surely, 2^5128878913 is an apocalyptic number.

It is an amenable number.

5128878913 is a deficient number, since it is larger than the sum of its proper divisors (163590847).

5128878913 is a wasteful number, since it uses less digits than its factorization.

5128878913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 657207.

The product of its digits is 967680, while the sum is 52.

The square root of 5128878913 is about 71616.1916957332. The cubic root of 5128878913 is about 1724.5434807337.

The spelling of 5128878913 in words is "five billion, one hundred twenty-eight million, eight hundred seventy-eight thousand, nine hundred thirteen".