268813779264 has 84 divisors (see below), whose sum is σ = 786899989824. Its totient is φ = 87698103552.

The previous prime is 268813779187. The next prime is 268813779271. The reversal of 268813779264 is 462977318862.

268813779264 is a `hidden beast` number, since 268 + 81 + 37 + 7 + 9 + 264 = 666.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 4937722 + ... + 4991865.

Almost surely, 2^268813779264 is an apocalyptic number.

268813779264 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

268813779264 is an abundant number, since it is smaller than the sum of its proper divisors (518086210560).

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

268813779264 is a wasteful number, since it uses less digits than its factorization.

268813779264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9929652 (or 9929639 counting only the distinct ones).

The product of its digits is 48771072, while the sum is 63.

The spelling of 268813779264 in words is "two hundred sixty-eight billion, eight hundred thirteen million, seven hundred seventy-nine thousand, two hundred sixty-four".