268635794869 has 8 divisors (see below), whose sum is σ = 289772036792. Its totient is φ = 247566974400.

The previous prime is 268635794863. The next prime is 268635794909. The reversal of 268635794869 is 968497536862.

It can be written as a sum of positive squares in 4 ways, for example, as 893711025 + 267742083844 = 29895^2 + 517438^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 268635794869 - 2¹⁷ = 268635663797 is a prime.

It is a super-2 number, since 2×268635794869² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (268635794863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 16847082 + ... + 16863019.

It is an arithmetic number, because the mean of its divisors is an integer number (36221504599).

Almost surely, 2^268635794869 is an apocalyptic number.

It is an amenable number.

268635794869 is a deficient number, since it is larger than the sum of its proper divisors (21136241923).

268635794869 is a wasteful number, since it uses less digits than its factorization.

268635794869 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33710727.

The product of its digits is 940584960, while the sum is 73.

The spelling of 268635794869 in words is "two hundred sixty-eight billion, six hundred thirty-five million, seven hundred ninety-four thousand, eight hundred sixty-nine".