268205994854847 has 48 divisors (see below), whose sum is σ = 449227000123200. Its totient is φ = 151023310811136.

The previous prime is 268205994854789. The next prime is 268205994854879. The reversal of 268205994854847 is 748458499502862.

268205994854847 is a `hidden beast` number, since 2 + 6 + 8 + 2 + 0 + 5 + 99 + 48 + 5 + 484 + 7 = 666.

It is not a de Polignac number, because 268205994854847 - 2¹² = 268205994850751 is a prime.

It is a super-3 number, since 3×268205994854847³ (a number of 44 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268205994854647) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 21535722 + ... + 31625927.

It is an arithmetic number, because the mean of its divisors is an integer number (9358895835900).

Almost surely, 2^{268205994854847} is an apocalyptic number.

268205994854847 is a deficient number, since it is larger than the sum of its proper divisors (181021005268353).

268205994854847 is a wasteful number, since it uses less digits than its factorization.

268205994854847 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53162832 (or 53162829 counting only the distinct ones).

The product of its (nonzero) digits is 11147673600, while the sum is 81.

The spelling of 268205994854847 in words is "two hundred sixty-eight trillion, two hundred five billion, nine hundred ninety-four million, eight hundred fifty-four thousand, eight hundred forty-seven".