268436222464 has 60 divisors (see below), whose sum is σ = 549113379606. Its totient is φ = 131096297472.

The previous prime is 268436222449. The next prime is 268436222477. The reversal of 268436222464 is 464222634862.

It can be written as a sum of positive squares in only one way, i.e., 145801785600 + 122634436864 = 381840^2 + 350192^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 804912 + ... + 1088464.

Almost surely, 2^268436222464 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 268436222464, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (274556689803).

268436222464 is an abundant number, since it is smaller than the sum of its proper divisors (280677157142).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

268436222464 is an frugal number, since it uses more digits than its factorization.

268436222464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 283657 (or 283598 counting only the distinct ones).

The product of its digits is 5308416, while the sum is 49.

The spelling of 268436222464 in words is "two hundred sixty-eight billion, four hundred thirty-six million, two hundred twenty-two thousand, four hundred sixty-four".