5278568991 has 8 divisors (see below), whose sum is σ = 7127182080. Its totient is φ = 3474500952.

The previous prime is 5278568963. The next prime is 5278568993. The reversal of 5278568991 is 1998658725.

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

It is not a de Polignac number, because 5278568991 - 2¹⁰ = 5278567967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5278568993) 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, 11135985 + ... + 11136458.

It is an arithmetic number, because the mean of its divisors is an integer number (890897760).

Almost surely, 2^5278568991 is an apocalyptic number.

5278568991 is a deficient number, since it is larger than the sum of its proper divisors (1848613089).

5278568991 is a wasteful number, since it uses less digits than its factorization.

5278568991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22272525.

The product of its digits is 10886400, while the sum is 60.

The square root of 5278568991 is about 72653.7610244645. The cubic root of 5278568991 is about 1741.1602108219.

The spelling of 5278568991 in words is "five billion, two hundred seventy-eight million, five hundred sixty-eight thousand, nine hundred ninety-one".