11261228709 has 8 divisors (see below), whose sum is σ = 15060335392. Its totient is φ = 7484803920.

The previous prime is 11261228701. The next prime is 11261228729. The reversal of 11261228709 is 90782216211.

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

It is not a de Polignac number, because 11261228709 - 2³ = 11261228701 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11261228701) 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 7 ways as a sum of consecutive naturals, for example, 5669314 + ... + 5671299.

It is an arithmetic number, because the mean of its divisors is an integer number (1882541924).

Almost surely, 2^11261228709 is an apocalyptic number.

It is an amenable number.

11261228709 is a deficient number, since it is larger than the sum of its proper divisors (3799106683).

11261228709 is a wasteful number, since it uses less digits than its factorization.

11261228709 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11340947.

The product of its (nonzero) digits is 24192, while the sum is 39.

The spelling of 11261228709 in words is "eleven billion, two hundred sixty-one million, two hundred twenty-eight thousand, seven hundred nine".