11133026261 has 4 divisors (see below), whose sum is σ = 12723458592. Its totient is φ = 9542593932.

The previous prime is 11133026243. The next prime is 11133026263. The reversal of 11133026261 is 16262033111.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-11133026261 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 11133026261.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11133026263) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 795216155 + ... + 795216168.

It is an arithmetic number, because the mean of its divisors is an integer number (3180864648).

Almost surely, 2^11133026261 is an apocalyptic number.

It is an amenable number.

11133026261 is a deficient number, since it is larger than the sum of its proper divisors (1590432331).

11133026261 is an equidigital number, since it uses as much as digits as its factorization.

11133026261 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1590432330.

The product of its (nonzero) digits is 1296, while the sum is 26.

Adding to 11133026261 its reverse (16262033111), we get a palindrome (27395059372).

The spelling of 11133026261 in words is "eleven billion, one hundred thirty-three million, twenty-six thousand, two hundred sixty-one".