66707371443 has 16 divisors (see below), whose sum is σ = 89069820320. Its totient is φ = 44408300544.

The previous prime is 66707371439. The next prime is 66707371541. The reversal of 66707371443 is 34417370766.

66707371443 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 66707371443 - 2² = 66707371439 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66707371392 and 66707371401.

It is not an unprimeable number, because it can be changed into a prime (66707331443) 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, 7466403 + ... + 7475331.

It is an arithmetic number, because the mean of its divisors is an integer number (5566863770).

Almost surely, 2^66707371443 is an apocalyptic number.

66707371443 is a deficient number, since it is larger than the sum of its proper divisors (22362448877).

66707371443 is a wasteful number, since it uses less digits than its factorization.

66707371443 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12198.

The product of its (nonzero) digits is 1778112, while the sum is 48.

The spelling of 66707371443 in words is "sixty-six billion, seven hundred seven million, three hundred seventy-one thousand, four hundred forty-three".