268513011 has 24 divisors (see below), whose sum is σ = 442260000. Its totient is φ = 155517696.

The previous prime is 268513009. The next prime is 268513031. The reversal of 268513011 is 110315862.

It is not a de Polignac number, because 268513011 - 2¹ = 268513009 is a prime.

It is a super-2 number, since 2×268513011² = 144198474152572242, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (268513031) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65511 + ... + 69488.

It is an arithmetic number, because the mean of its divisors is an integer number (18427500).

Almost surely, 2^268513011 is an apocalyptic number.

268513011 is a deficient number, since it is larger than the sum of its proper divisors (173746989).

268513011 is a wasteful number, since it uses less digits than its factorization.

268513011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 135035 (or 135032 counting only the distinct ones).

The product of its (nonzero) digits is 1440, while the sum is 27.

The square root of 268513011 is about 16386.3666198459. The cubic root of 268513011 is about 645.1416959291.

Adding to 268513011 its reverse (110315862), we get a palindrome (378828873).

The spelling of 268513011 in words is "two hundred sixty-eight million, five hundred thirteen thousand, eleven".