11445245220213 has 64 divisors (see below), whose sum is σ = 19402209607680. Its totient is φ = 6532038811584.

The previous prime is 11445245220197. The next prime is 11445245220329. The reversal of 11445245220213 is 31202254254411.

11445245220213 is a `hidden beast` number, since 1 + 1 + 44 + 524 + 52 + 20 + 21 + 3 = 666.

It is not a de Polignac number, because 11445245220213 - 2⁴ = 11445245220197 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11445245120213) 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 63 ways as a sum of consecutive naturals, for example, 749861020 + ... + 749876282.

It is an arithmetic number, because the mean of its divisors is an integer number (303159525120).

Almost surely, 2^{11445245220213} is an apocalyptic number.

It is an amenable number.

11445245220213 is a deficient number, since it is larger than the sum of its proper divisors (7956964387467).

11445245220213 is a wasteful number, since it uses less digits than its factorization.

11445245220213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19935 (or 19929 counting only the distinct ones).

The product of its (nonzero) digits is 76800, while the sum is 36.

Adding to 11445245220213 its reverse (31202254254411), we get a palindrome (42647499474624).

The spelling of 11445245220213 in words is "eleven trillion, four hundred forty-five billion, two hundred forty-five million, two hundred twenty thousand, two hundred thirteen".