11520321455599 has 16 divisors (see below), whose sum is σ = 12593988771840. Its totient is φ = 10451069928000.

The previous prime is 11520321455579. The next prime is 11520321455659. The reversal of 11520321455599 is 99555412302511.

It is a cyclic number.

It is not a de Polignac number, because 11520321455599 - 2⁹ = 11520321455087 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11520321455579) 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 15 ways as a sum of consecutive naturals, for example, 10168504 + ... + 11244514.

It is an arithmetic number, because the mean of its divisors is an integer number (787124298240).

Almost surely, 2^{11520321455599} is an apocalyptic number.

11520321455599 is a deficient number, since it is larger than the sum of its proper divisors (1073667316241).

11520321455599 is a wasteful number, since it uses less digits than its factorization.

11520321455599 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1078062.

The product of its (nonzero) digits is 2430000, while the sum is 52.

The spelling of 11520321455599 in words is "eleven trillion, five hundred twenty billion, three hundred twenty-one million, four hundred fifty-five thousand, five hundred ninety-nine".