11558978179 has 4 divisors (see below), whose sum is σ = 13210260784. Its totient is φ = 9907695576.

The previous prime is 11558978161. The next prime is 11558978183. The reversal of 11558978179 is 97187985511.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 97187985511 = 41 ⋅2370438671.

It is a cyclic number.

It is not a de Polignac number, because 11558978179 - 2¹¹ = 11558976131 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11558978129) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 825641292 + ... + 825641305.

It is an arithmetic number, because the mean of its divisors is an integer number (3302565196).

Almost surely, 2^11558978179 is an apocalyptic number.

11558978179 is a deficient number, since it is larger than the sum of its proper divisors (1651282605).

11558978179 is an equidigital number, since it uses as much as digits as its factorization.

11558978179 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1651282604.

The product of its digits is 6350400, while the sum is 61.

The spelling of 11558978179 in words is "eleven billion, five hundred fifty-eight million, nine hundred seventy-eight thousand, one hundred seventy-nine".