268512878539 has 4 divisors (see below), whose sum is σ = 269050981000. Its totient is φ = 267974776080.

The previous prime is 268512878489. The next prime is 268512878551. The reversal of 268512878539 is 935878215862.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 268512878539 - 2²³ = 268504489931 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268512878239) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 269050482 + ... + 269051479.

It is an arithmetic number, because the mean of its divisors is an integer number (67262745250).

Almost surely, 2^268512878539 is an apocalyptic number.

268512878539 is a deficient number, since it is larger than the sum of its proper divisors (538102461).

268512878539 is an equidigital number, since it uses as much as digits as its factorization.

268512878539 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 538102460.

The product of its digits is 58060800, while the sum is 64.

The spelling of 268512878539 in words is "two hundred sixty-eight billion, five hundred twelve million, eight hundred seventy-eight thousand, five hundred thirty-nine".