268648365897 has 6 divisors (see below), whose sum is σ = 388047639642. Its totient is φ = 179098910592.

The previous prime is 268648365893. The next prime is 268648365961. The reversal of 268648365897 is 798563846862.

268648365897 is a `hidden beast` number, since 2 + 6 + 8 + 6 + 4 + 8 + 36 + 589 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 241494599241 + 27153766656 = 491421^2 + 164784^2 .

It is not a de Polignac number, because 268648365897 - 2² = 268648365893 is a prime.

It is a super-2 number, since 2×268648365897² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (268648365893) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14924909208 + ... + 14924909225.

It is an arithmetic number, because the mean of its divisors is an integer number (64674606607).

Almost surely, 2^268648365897 is an apocalyptic number.

It is an amenable number.

268648365897 is a deficient number, since it is larger than the sum of its proper divisors (119399273745).

268648365897 is a wasteful number, since it uses less digits than its factorization.

268648365897 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29849818439 (or 29849818436 counting only the distinct ones).

The product of its digits is 836075520, while the sum is 72.

Adding to 268648365897 its sum of digits (72), we get a square (268648365969 = 518313²).

The spelling of 268648365897 in words is "two hundred sixty-eight billion, six hundred forty-eight million, three hundred sixty-five thousand, eight hundred ninety-seven".