268623385866 has 48 divisors (see below), whose sum is σ = 634980733920. Its totient is φ = 81394265760.

The previous prime is 268623385853. The next prime is 268623385867. The reversal of 268623385866 is 668583326862.

268623385866 is a `hidden beast` number, since 26 + 8 + 6 + 23 + 3 + 8 + 586 + 6 = 666.

268623385866 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×268623385866² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (268623385867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2664901 + ... + 2763863.

It is an arithmetic number, because the mean of its divisors is an integer number (13228765290).

Almost surely, 2^268623385866 is an apocalyptic number.

268623385866 is an abundant number, since it is smaller than the sum of its proper divisors (366357348054).

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

268623385866 is a wasteful number, since it uses less digits than its factorization.

268623385866 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 112691 (or 112688 counting only the distinct ones).

The product of its digits is 119439360, while the sum is 63.

The spelling of 268623385866 in words is "two hundred sixty-eight billion, six hundred twenty-three million, three hundred eighty-five thousand, eight hundred sixty-six".