11662553632321 has 8 divisors (see below), whose sum is σ = 11741410722600. Its totient is φ = 11583704341248.

The previous prime is 11662553632271. The next prime is 11662553632333. The reversal of 11662553632321 is 12323635526611.

It can be written as a sum of positive squares in 4 ways, for example, as 95317300225 + 11567236332096 = 308735^2 + 3401064^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 11662553632321 - 2¹⁹ = 11662553108033 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (11662553633321) 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 7 ways as a sum of consecutive naturals, for example, 1066735 + ... + 4946011.

It is an arithmetic number, because the mean of its divisors is an integer number (1467676340325).

Almost surely, 2^{11662553632321} is an apocalyptic number.

It is an amenable number.

11662553632321 is a deficient number, since it is larger than the sum of its proper divisors (78857090279).

11662553632321 is a wasteful number, since it uses less digits than its factorization.

11662553632321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3899603.

The product of its digits is 1166400, while the sum is 46.

The spelling of 11662553632321 in words is "eleven trillion, six hundred sixty-two billion, five hundred fifty-three million, six hundred thirty-two thousand, three hundred twenty-one".