13355515121044 has 96 divisors (see below), whose sum is σ = 26660038204800. Its totient is φ = 5814649774080.

The previous prime is 13355515121041. The next prime is 13355515121077. The reversal of 13355515121044 is 44012151555331.

It is a junction number, because it is equal to n+sod(n) for n = 13355515120988 and 13355515121006.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13355515121041) 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 31 ways as a sum of consecutive naturals, for example, 365595772 + ... + 365632300.

It is an arithmetic number, because the mean of its divisors is an integer number (277708731300).

Almost surely, 2^{13355515121044} is an apocalyptic number.

It is an amenable number.

13355515121044 is a deficient number, since it is larger than the sum of its proper divisors (13304523083756).

13355515121044 is a wasteful number, since it uses less digits than its factorization.

13355515121044 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43193 (or 43191 counting only the distinct ones).

The product of its (nonzero) digits is 180000, while the sum is 40.

Adding to 13355515121044 its reverse (44012151555331), we get a palindrome (57367666676375).

The spelling of 13355515121044 in words is "thirteen trillion, three hundred fifty-five billion, five hundred fifteen million, one hundred twenty-one thousand, forty-four".