11544379519 has 4 divisors (see below), whose sum is σ = 11552144544. Its totient is φ = 11536614496.

The previous prime is 11544379513. The next prime is 11544379523. The reversal of 11544379519 is 91597344511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 91597344511 = 19 ⋅4820912869.

It is a cyclic number.

It is not a de Polignac number, because 11544379519 - 2¹³ = 11544371327 is a prime.

It is a super-2 number, since 2×11544379519² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11544379513) 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, 3880282 + ... + 3883255.

It is an arithmetic number, because the mean of its divisors is an integer number (2888036136).

Almost surely, 2^11544379519 is an apocalyptic number.

11544379519 is a deficient number, since it is larger than the sum of its proper divisors (7765025).

11544379519 is an equidigital number, since it uses as much as digits as its factorization.

11544379519 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7765024.

The product of its digits is 680400, while the sum is 49.

The spelling of 11544379519 in words is "eleven billion, five hundred forty-four million, three hundred seventy-nine thousand, five hundred nineteen".