11544521321445 has 64 divisors (see below), whose sum is σ = 21792893681664. Its totient is φ = 5106797890560.

The previous prime is 11544521321429. The next prime is 11544521321533. The reversal of 11544521321445 is 54412312544511.

It is not a de Polignac number, because 11544521321445 - 2⁴ = 11544521321429 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 11544521321397 and 11544521321406.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 37712974 + ... + 38017856.

It is an arithmetic number, because the mean of its divisors is an integer number (340513963776).

Almost surely, 2^{11544521321445} is an apocalyptic number.

11544521321445 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

11544521321445 is a deficient number, since it is larger than the sum of its proper divisors (10248372360219).

11544521321445 is a wasteful number, since it uses less digits than its factorization.

11544521321445 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 316562.

The product of its digits is 384000, while the sum is 42.

Adding to 11544521321445 its reverse (54412312544511), we get a palindrome (65956833865956).

The spelling of 11544521321445 in words is "eleven trillion, five hundred forty-four billion, five hundred twenty-one million, three hundred twenty-one thousand, four hundred forty-five".