10548664113821 has 4 divisors (see below), whose sum is σ = 10805948604444. Its totient is φ = 10291379623200.

The previous prime is 10548664113809. The next prime is 10548664113877. The reversal of 10548664113821 is 12831146684501.

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 5248474812025 + 5300189301796 = 2290955^2 + 2302214^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-10548664113821 is a prime.

It is a super-2 number, since 2×10548664113821² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 10548664113821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10548664013821) 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, 128642245250 + ... + 128642245331.

It is an arithmetic number, because the mean of its divisors is an integer number (2701487151111).

Almost surely, 2^{10548664113821} is an apocalyptic number.

It is an amenable number.

10548664113821 is a deficient number, since it is larger than the sum of its proper divisors (257284490623).

10548664113821 is an equidigital number, since it uses as much as digits as its factorization.

10548664113821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 257284490622.

The product of its (nonzero) digits is 1105920, while the sum is 50.

The spelling of 10548664113821 in words is "ten trillion, five hundred forty-eight billion, six hundred sixty-four million, one hundred thirteen thousand, eight hundred twenty-one".