11758975549 has 4 divisors (see below), whose sum is σ = 11760442720. Its totient is φ = 11757508380.

The previous prime is 11758975523. The next prime is 11758975577. The reversal of 11758975549 is 94557985711.

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: 94557985711 = 7 ⋅13508283673.

It is a cyclic number.

It is not a de Polignac number, because 11758975549 - 2²⁵ = 11725421117 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 (11758975519) 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, 721497 + ... + 737614.

It is an arithmetic number, because the mean of its divisors is an integer number (2940110680).

Almost surely, 2^11758975549 is an apocalyptic number.

It is an amenable number.

11758975549 is a deficient number, since it is larger than the sum of its proper divisors (1467171).

11758975549 is an equidigital number, since it uses as much as digits as its factorization.

11758975549 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1467170.

The product of its digits is 15876000, while the sum is 61.

The spelling of 11758975549 in words is "eleven billion, seven hundred fifty-eight million, nine hundred seventy-five thousand, five hundred forty-nine".