67440458781796 has 27 divisors (see below), whose sum is σ = 119252872723257. Its totient is φ = 33371809787520.

The previous prime is 67440458781791. The next prime is 67440458781827. The reversal of 67440458781796 is 69718785404476.

The square root of 67440458781796 is 8212214.

It is a perfect power (a square), and thus also a powerful number.

67440458781796 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 30283339180900 + 37157119600896 = 5503030^2 + 6095664^2 .

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (67440458781791) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 1593148351 + ... + 1593190681.

Almost surely, 2^{67440458781796} is an apocalyptic number.

67440458781796 is the 8212214-th square number.

It is an amenable number.

67440458781796 is a deficient number, since it is larger than the sum of its proper divisors (51812413941461).

67440458781796 is an frugal number, since it uses more digits than its factorization.

67440458781796 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 84860 (or 42430 counting only the distinct ones).

The product of its (nonzero) digits is 2275983360, while the sum is 76.

The spelling of 67440458781796 in words is "sixty-seven trillion, four hundred forty billion, four hundred fifty-eight million, seven hundred eighty-one thousand, seven hundred ninety-six".