268706172849 has 16 divisors (see below), whose sum is σ = 358919761920. Its totient is φ = 178815306240.

The previous prime is 268706172797. The next prime is 268706172853. The reversal of 268706172849 is 948271607862.

It is a happy number.

268706172849 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 268706172849 - 2²³ = 268697784241 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 268706172792 and 268706172801.

It is not an unprimeable number, because it can be changed into a prime (268706171849) 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 15 ways as a sum of consecutive naturals, for example, 3790369 + ... + 3860609.

It is an arithmetic number, because the mean of its divisors is an integer number (22432485120).

Almost surely, 2^268706172849 is an apocalyptic number.

It is an amenable number.

268706172849 is a deficient number, since it is larger than the sum of its proper divisors (90213589071).

268706172849 is a wasteful number, since it uses less digits than its factorization.

268706172849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72520.

The product of its (nonzero) digits is 16257024, while the sum is 60.

The spelling of 268706172849 in words is "two hundred sixty-eight billion, seven hundred six million, one hundred seventy-two thousand, eight hundred forty-nine".