11520515504345 has 8 divisors (see below), whose sum is σ = 13842596007240. Its totient is φ = 9204427468800.

The previous prime is 11520515504317. The next prime is 11520515504357. The reversal of 11520515504345 is 54340551502511.

It can be written as a sum of positive squares in 4 ways, for example, as 2220162580441 + 9300352923904 = 1490021^2 + 3049648^2 .

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

It is a de Polignac number, because none of the positive numbers 2^k-11520515504345 is a prime.

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1498112606 + ... + 1498120295.

It is an arithmetic number, because the mean of its divisors is an integer number (1730324500905).

Almost surely, 2^{11520515504345} is an apocalyptic number.

It is an amenable number.

11520515504345 is a deficient number, since it is larger than the sum of its proper divisors (2322080502895).

11520515504345 is an equidigital number, since it uses as much as digits as its factorization.

11520515504345 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2996233675.

The product of its (nonzero) digits is 300000, while the sum is 41.

The spelling of 11520515504345 in words is "eleven trillion, five hundred twenty billion, five hundred fifteen million, five hundred four thousand, three hundred forty-five".