268648365968 has 40 divisors (see below), whose sum is σ = 528823301952. Its totient is φ = 132181999488.

The previous prime is 268648365961. The next prime is 268648365991. The reversal of 268648365968 is 869563846862.

It is a Cunningham number, because it is equal to 518313²-1.

It is not an unprimeable number, because it can be changed into a prime (268648365961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 907046 + ... + 1166202.

Almost surely, 2^268648365968 is an apocalyptic number.

It is an amenable number.

268648365968 is a deficient number, since it is larger than the sum of its proper divisors (260174935984).

268648365968 is a wasteful number, since it uses less digits than its factorization.

268648365968 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 260199 (or 260193 counting only the distinct ones).

The product of its digits is 716636160, while the sum is 71.

The spelling of 268648365968 in words is "two hundred sixty-eight billion, six hundred forty-eight million, three hundred sixty-five thousand, nine hundred sixty-eight".