67344716440 has 64 divisors (see below), whose sum is σ = 160076959200. Its totient is φ = 25427893248.

The previous prime is 67344716357. The next prime is 67344716449. The reversal of 67344716440 is 4461744376.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (67344716449) 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 15 ways as a sum of consecutive naturals, for example, 50572 + ... + 370468.

Almost surely, 2^67344716440 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 67344716440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (80038479600).

67344716440 is an abundant number, since it is smaller than the sum of its proper divisors (92732242760).

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

67344716440 is a wasteful number, since it uses less digits than its factorization.

67344716440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 320204 (or 320200 counting only the distinct ones).

The product of its (nonzero) digits is 1354752, while the sum is 46.

The spelling of 67344716440 in words is "sixty-seven billion, three hundred forty-four million, seven hundred sixteen thousand, four hundred forty".