13144404321402 has 32 divisors (see below), whose sum is σ = 27675311104320. Its totient is φ = 4150432379520.

The previous prime is 13144404321379. The next prime is 13144404321407. The reversal of 13144404321402 is 20412340444131.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (13144404321407) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4901299 + ... + 7093062.

It is an arithmetic number, because the mean of its divisors is an integer number (864853472010).

Almost surely, 2^{13144404321402} is an apocalyptic number.

13144404321402 is an abundant number, since it is smaller than the sum of its proper divisors (14530906782918).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

13144404321402 is a wasteful number, since it uses less digits than its factorization.

13144404321402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12003998.

The product of its (nonzero) digits is 36864, while the sum is 33.

Adding to 13144404321402 its reverse (20412340444131), we get a palindrome (33556744765533).

The spelling of 13144404321402 in words is "thirteen trillion, one hundred forty-four billion, four hundred four million, three hundred twenty-one thousand, four hundred two".