268306388288 has 28 divisors (see below), whose sum is σ = 532455436992. Its totient is φ = 134144388480.

The previous prime is 268306388281. The next prime is 268306388327. The reversal of 268306388288 is 882883603862.

It is a Cunningham number, because it is equal to 517983²-1.

It is a self number, because there is not a number n which added to its sum of digits gives 268306388288.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268306388281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 906473 + ... + 1165463.

Almost surely, 2^268306388288 is an apocalyptic number.

It is an amenable number.

268306388288 is a deficient number, since it is larger than the sum of its proper divisors (264149048704).

268306388288 is a wasteful number, since it uses less digits than its factorization.

268306388288 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 275190 (or 275180 counting only the distinct ones).

The product of its (nonzero) digits is 42467328, while the sum is 62.

The spelling of 268306388288 in words is "two hundred sixty-eight billion, three hundred six million, three hundred eighty-eight thousand, two hundred eighty-eight".