13044012402321 has 6 divisors (see below), whose sum is σ = 18841351247810. Its totient is φ = 8696008268208.

The previous prime is 13044012402259. The next prime is 13044012402359. The reversal of 13044012402321 is 12320421044031.

13044012402321 is a `hidden beast` number, since 1 + 3 + 0 + 4 + 401 + 24 + 0 + 232 + 1 = 666.

It can be written as a sum of positive squares in only one way, i.e., 9151599075921 + 3892413326400 = 3025161^2 + 1972920^2 .

It is not a de Polignac number, because 13044012402321 - 2⁶ = 13044012402257 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (13044012402361) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 724667355676 + ... + 724667355693.

Almost surely, 2^{13044012402321} is an apocalyptic number.

It is an amenable number.

13044012402321 is a deficient number, since it is larger than the sum of its proper divisors (5797338845489).

13044012402321 is a wasteful number, since it uses less digits than its factorization.

13044012402321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1449334711375 (or 1449334711372 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

Adding to 13044012402321 its reverse (12320421044031), we get a palindrome (25364433446352).

The spelling of 13044012402321 in words is "thirteen trillion, forty-four billion, twelve million, four hundred two thousand, three hundred twenty-one".