268667538865 has 32 divisors (see below), whose sum is σ = 354795552000. Its totient is φ = 193687845120.

The previous prime is 268667538847. The next prime is 268667538869. The reversal of 268667538865 is 568835766862.

It is not a de Polignac number, because 268667538865 - 2¹³ = 268667530673 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 268667538794 and 268667538803.

It is not an unprimeable number, because it can be changed into a prime (268667538869) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 2898579 + ... + 2989831.

It is an arithmetic number, because the mean of its divisors is an integer number (11087361000).

Almost surely, 2^268667538865 is an apocalyptic number.

It is an amenable number.

268667538865 is a deficient number, since it is larger than the sum of its proper divisors (86128013135).

268667538865 is a wasteful number, since it uses less digits than its factorization.

268667538865 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 91737.

The product of its digits is 696729600, while the sum is 70.

The spelling of 268667538865 in words is "two hundred sixty-eight billion, six hundred sixty-seven million, five hundred thirty-eight thousand, eight hundred sixty-five".