11520042215533 has 4 divisors (see below), whose sum is σ = 11520291069468. Its totient is φ = 11519793361600.

The previous prime is 11520042215477. The next prime is 11520042215557. The reversal of 11520042215533 is 33551224002511.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 5334261398404 + 6185780817129 = 2309602^2 + 2487123^2 .

It is a cyclic number.

It is not a de Polignac number, because 11520042215533 - 2³⁷ = 11382603262061 is a prime.

It is a super-2 number, since 2×11520042215533² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11520042210533) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 124357516 + ... + 124450117.

It is an arithmetic number, because the mean of its divisors is an integer number (2880072767367).

Almost surely, 2^{11520042215533} is an apocalyptic number.

It is an amenable number.

11520042215533 is a deficient number, since it is larger than the sum of its proper divisors (248853935).

11520042215533 is an equidigital number, since it uses as much as digits as its factorization.

11520042215533 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 248853934.

The product of its (nonzero) digits is 36000, while the sum is 34.

The spelling of 11520042215533 in words is "eleven trillion, five hundred twenty billion, forty-two million, two hundred fifteen thousand, five hundred thirty-three".