13144015345221 has 6 divisors (see below), whose sum is σ = 18985799943110. Its totient is φ = 8762676896808.

The previous prime is 13144015345211. The next prime is 13144015345229. The reversal of 13144015345221 is 12254351044131.

13144015345221 is a `hidden beast` number, since 1 + 3 + 1 + 440 + 153 + 45 + 2 + 21 = 666.

It can be written as a sum of positive squares in only one way, i.e., 10710761652900 + 2433253692321 = 3272730^2 + 1559889^2 .

It is not a de Polignac number, because 13144015345221 - 2⁹ = 13144015344709 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13144015345229) 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 5 ways as a sum of consecutive naturals, for example, 730223074726 + ... + 730223074743.

Almost surely, 2^{13144015345221} is an apocalyptic number.

It is an amenable number.

13144015345221 is a deficient number, since it is larger than the sum of its proper divisors (5841784597889).

13144015345221 is a wasteful number, since it uses less digits than its factorization.

13144015345221 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1460446149475 (or 1460446149472 counting only the distinct ones).

The product of its (nonzero) digits is 57600, while the sum is 36.

Adding to 13144015345221 its reverse (12254351044131), we get a palindrome (25398366389352).

The spelling of 13144015345221 in words is "thirteen trillion, one hundred forty-four billion, fifteen million, three hundred forty-five thousand, two hundred twenty-one".