268591342977 has 6 divisors (see below), whose sum is σ = 387965273202. Its totient is φ = 179060895312.

The previous prime is 268591342973. The next prime is 268591342979. The reversal of 268591342977 is 779243195862.

268591342977 is a `hidden beast` number, since 2 + 6 + 8 + 591 + 34 + 2 + 9 + 7 + 7 = 666.

It can be written as a sum of positive squares in only one way, i.e., 170126551296 + 98464791681 = 412464^2 + 313791^2 .

It is not a de Polignac number, because 268591342977 - 2² = 268591342973 is a prime.

It is not an unprimeable number, because it can be changed into a prime (268591342973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 14921741268 + ... + 14921741285.

It is an arithmetic number, because the mean of its divisors is an integer number (64660878867).

Almost surely, 2^268591342977 is an apocalyptic number.

It is an amenable number.

268591342977 is a deficient number, since it is larger than the sum of its proper divisors (119373930225).

268591342977 is a wasteful number, since it uses less digits than its factorization.

268591342977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29843482559 (or 29843482556 counting only the distinct ones).

The product of its digits is 45722880, while the sum is 63.

The spelling of 268591342977 in words is "two hundred sixty-eight billion, five hundred ninety-one million, three hundred forty-two thousand, nine hundred seventy-seven".