11913124609 has 4 divisors (see below), whose sum is σ = 11918969280. Its totient is φ = 11907279940.

The previous prime is 11913124607. The next prime is 11913124631. The reversal of 11913124609 is 90642131911.

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 not a de Polignac number, because 11913124609 - 2¹ = 11913124607 is a prime.

It is a super-2 number, since 2×11913124609² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11913124607) 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, 2919277 + ... + 2923354.

It is an arithmetic number, because the mean of its divisors is an integer number (2979742320).

Almost surely, 2^11913124609 is an apocalyptic number.

It is an amenable number.

11913124609 is a deficient number, since it is larger than the sum of its proper divisors (5844671).

11913124609 is an equidigital number, since it uses as much as digits as its factorization.

11913124609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5844670.

The product of its (nonzero) digits is 11664, while the sum is 37.

The spelling of 11913124609 in words is "eleven billion, nine hundred thirteen million, one hundred twenty-four thousand, six hundred nine".