268710815844 has 18 divisors (see below), whose sum is σ = 679241229030. Its totient is φ = 89570271936.

The previous prime is 268710815803. The next prime is 268710815869. The reversal of 268710815844 is 448518017862.

It can be written as a sum of positive squares in only one way, i.e., 213527168100 + 55183647744 = 462090^2 + 234912^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 3732094629 + ... + 3732094700.

It is an arithmetic number, because the mean of its divisors is an integer number (37735623835).

Almost surely, 2^268710815844 is an apocalyptic number.

It is an amenable number.

268710815844 is an abundant number, since it is smaller than the sum of its proper divisors (410530413186).

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

268710815844 is a wasteful number, since it uses less digits than its factorization.

268710815844 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7464189339 (or 7464189334 counting only the distinct ones).

The product of its (nonzero) digits is 3440640, while the sum is 54.

The spelling of 268710815844 in words is "two hundred sixty-eight billion, seven hundred ten million, eight hundred fifteen thousand, eight hundred forty-four".