11115215331513 has 8 divisors (see below), whose sum is σ = 15007885680000. Its totient is φ = 7316344268688.

The previous prime is 11115215331419. The next prime is 11115215331527. The reversal of 11115215331513 is 31513351251111.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 11115215331513 - 2²¹ = 11115213234361 is a prime.

It is not an unprimeable number, because it can be changed into a prime (11115215331113) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23449821138 + ... + 23449821611.

It is an arithmetic number, because the mean of its divisors is an integer number (1875985710000).

Almost surely, 2^{11115215331513} is an apocalyptic number.

It is an amenable number.

11115215331513 is a deficient number, since it is larger than the sum of its proper divisors (3892670348487).

11115215331513 is an equidigital number, since it uses as much as digits as its factorization.

11115215331513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46899642831.

The product of its digits is 6750, while the sum is 33.

Adding to 11115215331513 its reverse (31513351251111), we get a palindrome (42628566582624).

The spelling of 11115215331513 in words is "eleven trillion, one hundred fifteen billion, two hundred fifteen million, three hundred thirty-one thousand, five hundred thirteen".