268108705064 has 8 divisors (see below), whose sum is σ = 502703822010. Its totient is φ = 134054352528.

The previous prime is 268108705057. The next prime is 268108705079. The reversal of 268108705064 is 460507801862.

It can be written as a sum of positive squares in only one way, i.e., 266142492100 + 1966212964 = 515890^2 + 44342^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16756794059 + ... + 16756794074.

Almost surely, 2^268108705064 is an apocalyptic number.

It is an amenable number.

268108705064 is a deficient number, since it is larger than the sum of its proper divisors (234595116946).

268108705064 is a wasteful number, since it uses less digits than its factorization.

268108705064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33513588139 (or 33513588135 counting only the distinct ones).

The product of its (nonzero) digits is 645120, while the sum is 47.

The spelling of 268108705064 in words is "two hundred sixty-eight billion, one hundred eight million, seven hundred five thousand, sixty-four".