13420673344 has 28 divisors (see below), whose sum is σ = 28680238804. Its totient is φ = 6194156544.

The previous prime is 13420673333. The next prime is 13420673347. The reversal of 13420673344 is 44337602431.

It can be written as a sum of positive squares in 2 ways, for example, as 3760142400 + 9660530944 = 61320^2 + 98288^2 .

It is a super-2 number, since 2×13420673344² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (13420673347) 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 3 ways as a sum of consecutive naturals, for example, 8064477 + ... + 8066140.

It is an arithmetic number, because the mean of its divisors is an integer number (1024294243).

Almost surely, 2^13420673344 is an apocalyptic number.

It is an amenable number.

13420673344 is an abundant number, since it is smaller than the sum of its proper divisors (15259565460).

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

13420673344 is a wasteful number, since it uses less digits than its factorization.

13420673344 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16130642 (or 16130632 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 37.

The spelling of 13420673344 in words is "thirteen billion, four hundred twenty million, six hundred seventy-three thousand, three hundred forty-four".