268222067819 has 4 divisors (see below), whose sum is σ = 272619150960. Its totient is φ = 263824984680.

The previous prime is 268222067791. The next prime is 268222067891. The reversal of 268222067819 is 918760222862.

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 268222067819 - 2¹² = 268222063723 is a prime.

It is a super-2 number, since 2×268222067819² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268222067899) 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, 2198541479 + ... + 2198541600.

It is an arithmetic number, because the mean of its divisors is an integer number (68154787740).

Almost surely, 2^268222067819 is an apocalyptic number.

268222067819 is a deficient number, since it is larger than the sum of its proper divisors (4397083141).

268222067819 is an equidigital number, since it uses as much as digits as its factorization.

268222067819 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4397083140.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The spelling of 268222067819 in words is "two hundred sixty-eight billion, two hundred twenty-two million, sixty-seven thousand, eight hundred nineteen".