11553214304521 has 4 divisors (see below), whose sum is σ = 11771199480132. Its totient is φ = 11335229128912.

The previous prime is 11553214304479. The next prime is 11553214304549. The reversal of 11553214304521 is 12540341235511.

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 9591631985296 + 1961582319225 = 3097036^2 + 1400565^2 .

It is a cyclic number.

It is not a de Polignac number, because 11553214304521 - 2³⁷ = 11415775351049 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11553214304581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 108992587726 + ... + 108992587831.

It is an arithmetic number, because the mean of its divisors is an integer number (2942799870033).

Almost surely, 2^{11553214304521} is an apocalyptic number.

It is an amenable number.

11553214304521 is a deficient number, since it is larger than the sum of its proper divisors (217985175611).

11553214304521 is an equidigital number, since it uses as much as digits as its factorization.

11553214304521 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 217985175610.

The product of its (nonzero) digits is 72000, while the sum is 37.

The spelling of 11553214304521 in words is "eleven trillion, five hundred fifty-three billion, two hundred fourteen million, three hundred four thousand, five hundred twenty-one".