11520665115125 has 16 divisors (see below), whose sum is σ = 14381028268464. Its totient is φ = 9214456320000.

The previous prime is 11520665115083. The next prime is 11520665115137. The reversal of 11520665115125 is 52151156602511.

It can be written as a sum of positive squares in 8 ways, for example, as 7367049921361 + 4153615193764 = 2714231^2 + 2038042^2 .

It is not a de Polignac number, because 11520665115125 - 2³² = 11516370147829 is a prime.

It is a Duffinian number.

It is a Curzon number.

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, 9821516 + ... + 10931765.

It is an arithmetic number, because the mean of its divisors is an integer number (898814266779).

Almost surely, 2^{11520665115125} is an apocalyptic number.

It is an amenable number.

11520665115125 is a deficient number, since it is larger than the sum of its proper divisors (2860363153339).

11520665115125 is an equidigital number, since it uses as much as digits as its factorization.

11520665115125 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20757737 (or 20757727 counting only the distinct ones).

The product of its (nonzero) digits is 90000, while the sum is 41.

The spelling of 11520665115125 in words is "eleven trillion, five hundred twenty billion, six hundred sixty-five million, one hundred fifteen thousand, one hundred twenty-five".