11520504203265 has 24 divisors (see below), whose sum is σ = 19969026674688. Its totient is φ = 6144221916960.

The previous prime is 11520504203237. The next prime is 11520504203281. The reversal of 11520504203265 is 56230240502511.

11520504203265 is a `hidden beast` number, since 1 + 1 + 5 + 205 + 0 + 420 + 3 + 26 + 5 = 666.

It is not a de Polignac number, because 11520504203265 - 2¹⁶ = 11520504137729 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 23 ways as a sum of consecutive naturals, for example, 5431552 + ... + 7248638.

It is an arithmetic number, because the mean of its divisors is an integer number (832042778112).

Almost surely, 2^{11520504203265} is an apocalyptic number.

11520504203265 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11520504203265 is a deficient number, since it is larger than the sum of its proper divisors (8448522471423).

11520504203265 is a wasteful number, since it uses less digits than its factorization.

11520504203265 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1957989 (or 1957986 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 36.

Adding to 11520504203265 its reverse (56230240502511), we get a palindrome (67750744705776).

The spelling of 11520504203265 in words is "eleven trillion, five hundred twenty billion, five hundred four million, two hundred three thousand, two hundred sixty-five".