13344134921 has 8 divisors (see below), whose sum is σ = 15215936904. Its totient is φ = 11593094400.

The previous prime is 13344134893. The next prime is 13344134927. The reversal of 13344134921 is 12943144331.

It can be written as a sum of positive squares in 4 ways, for example, as 40819321 + 13303315600 = 6389^2 + 115340^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 13344134921 - 2¹⁰ = 13344133897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (13344134927) 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 7 ways as a sum of consecutive naturals, for example, 30190130 + ... + 30190571.

It is an arithmetic number, because the mean of its divisors is an integer number (1901992113).

Almost surely, 2^13344134921 is an apocalyptic number.

It is an amenable number.

13344134921 is a deficient number, since it is larger than the sum of its proper divisors (1871801983).

13344134921 is a wasteful number, since it uses less digits than its factorization.

13344134921 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60380731.

The product of its digits is 31104, while the sum is 35.

The spelling of 13344134921 in words is "thirteen billion, three hundred forty-four million, one hundred thirty-four thousand, nine hundred twenty-one".