268203158018 has 8 divisors (see below), whose sum is σ = 425969721612. Its totient is φ = 126213250816.

The previous prime is 268203158017. The next prime is 268203158029. The reversal of 268203158018 is 810851302862.

It can be written as a sum of positive squares in 2 ways, for example, as 256859416969 + 11343741049 = 506813^2 + 106507^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 268203158018.

It is not an unprimeable number, because it can be changed into a prime (268203158017) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3944164055 + ... + 3944164122.

Almost surely, 2^268203158018 is an apocalyptic number.

268203158018 is a deficient number, since it is larger than the sum of its proper divisors (157766563594).

268203158018 is a wasteful number, since it uses less digits than its factorization.

268203158018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7888328196.

The product of its (nonzero) digits is 184320, while the sum is 44.

The spelling of 268203158018 in words is "two hundred sixty-eight billion, two hundred three million, one hundred fifty-eight thousand, eighteen".