5278879111391 has 8 divisors (see below), whose sum is σ = 5301356419968. Its totient is φ = 5256441135000.

The previous prime is 5278879111379. The next prime is 5278879111403. The reversal of 5278879111391 is 1931119788725.

5278879111391 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (5278879111379) and next prime (5278879111403).

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-5278879111391 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5278879111361) 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, 9564035 + ... + 10100916.

It is an arithmetic number, because the mean of its divisors is an integer number (662669552496).

Almost surely, 2^{5278879111391} is an apocalyptic number.

5278879111391 is a deficient number, since it is larger than the sum of its proper divisors (22477308577).

5278879111391 is a wasteful number, since it uses less digits than its factorization.

5278879111391 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19666093.

The product of its digits is 7620480, while the sum is 62.

The spelling of 5278879111391 in words is "five trillion, two hundred seventy-eight billion, eight hundred seventy-nine million, one hundred eleven thousand, three hundred ninety-one".