11515316611125 has 16 divisors (see below), whose sum is σ = 19161486841536. Its totient is φ = 6141502192400.

The previous prime is 11515316611091. The next prime is 11515316611157. The reversal of 11515316611125 is 52111661351511.

It is a happy number.

11515316611125 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 11515316611125 - 2³¹ = 11513169127477 is a prime.

It is a super-4 number, since 4×11515316611125⁴ (a number of 53 digits) contains 4444 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15353755107 + ... + 15353755856.

It is an arithmetic number, because the mean of its divisors is an integer number (1197592927596).

Almost surely, 2^{11515316611125} is an apocalyptic number.

11515316611125 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11515316611125 is a deficient number, since it is larger than the sum of its proper divisors (7646170230411).

11515316611125 is an equidigital number, since it uses as much as digits as its factorization.

11515316611125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30707510981 (or 30707510971 counting only the distinct ones).

The product of its digits is 27000, while the sum is 39.

Adding to 11515316611125 its reverse (52111661351511), we get a palindrome (63626977962636).

The spelling of 11515316611125 in words is "eleven trillion, five hundred fifteen billion, three hundred sixteen million, six hundred eleven thousand, one hundred twenty-five".