11247107509 has 4 divisors (see below), whose sum is σ = 12269571840. Its totient is φ = 10224643180.

The previous prime is 11247107491. The next prime is 11247107539. The reversal of 11247107509 is 90570174211.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90570174211 = 11 ⋅8233652201.

It is a cyclic number.

It is not a de Polignac number, because 11247107509 - 2²³ = 11238718901 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 (11247107539) 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 3 ways as a sum of consecutive naturals, for example, 511232149 + ... + 511232170.

It is an arithmetic number, because the mean of its divisors is an integer number (3067392960).

Almost surely, 2^11247107509 is an apocalyptic number.

It is an amenable number.

11247107509 is a deficient number, since it is larger than the sum of its proper divisors (1022464331).

11247107509 is a wasteful number, since it uses less digits than its factorization.

11247107509 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1022464330.

The product of its (nonzero) digits is 17640, while the sum is 37.

The spelling of 11247107509 in words is "eleven billion, two hundred forty-seven million, one hundred seven thousand, five hundred nine".