11509049679 has 8 divisors (see below), whose sum is σ = 15411260592. Its totient is φ = 7639769280.

The previous prime is 11509049647. The next prime is 11509049723. The reversal of 11509049679 is 97694090511.

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

It is not a de Polignac number, because 11509049679 - 2⁵ = 11509049647 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11509049609) 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, 8231812 + ... + 8233209.

It is an arithmetic number, because the mean of its divisors is an integer number (1926407574).

Almost surely, 2^11509049679 is an apocalyptic number.

11509049679 is a deficient number, since it is larger than the sum of its proper divisors (3902210913).

11509049679 is a wasteful number, since it uses less digits than its factorization.

11509049679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16465257.

The product of its (nonzero) digits is 612360, while the sum is 51.

The spelling of 11509049679 in words is "eleven billion, five hundred nine million, forty-nine thousand, six hundred seventy-nine".