11115538479145 has 4 divisors (see below), whose sum is σ = 13338646174980. Its totient is φ = 8892430783312.

The previous prime is 11115538479119. The next prime is 11115538479161. The reversal of 11115538479145 is 54197483551111.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 6867607254544 + 4247931224601 = 2620612^2 + 2061051^2 .

It is a cyclic number.

It is not a de Polignac number, because 11115538479145 - 2⁵ = 11115538479113 is a prime.

It is an unprimeable number.

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, 1111553847910 + ... + 1111553847919.

It is an arithmetic number, because the mean of its divisors is an integer number (3334661543745).

Almost surely, 2^{11115538479145} is an apocalyptic number.

It is an amenable number.

11115538479145 is a deficient number, since it is larger than the sum of its proper divisors (2223107695835).

11115538479145 is an equidigital number, since it uses as much as digits as its factorization.

11115538479145 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2223107695834.

The product of its digits is 3024000, while the sum is 55.

The spelling of 11115538479145 in words is "eleven trillion, one hundred fifteen billion, five hundred thirty-eight million, four hundred seventy-nine thousand, one hundred forty-five".