66303044071447 has 16 divisors (see below), whose sum is σ = 67125866987520. Its totient is φ = 65485268456832.

The previous prime is 66303044071373. The next prime is 66303044071483. The reversal of 66303044071447 is 74417044030366.

It is a cyclic number.

It is not a de Polignac number, because 66303044071447 - 2¹⁹ = 66303043547159 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 66303044071447.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66303044071247) 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, 47374303 + ... + 48753775.

It is an arithmetic number, because the mean of its divisors is an integer number (4195366686720).

Almost surely, 2^{66303044071447} is an apocalyptic number.

66303044071447 is a deficient number, since it is larger than the sum of its proper divisors (822822916073).

66303044071447 is a wasteful number, since it uses less digits than its factorization.

66303044071447 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1381302.

The product of its (nonzero) digits is 4064256, while the sum is 49.

The spelling of 66303044071447 in words is "sixty-six trillion, three hundred three billion, forty-four million, seventy-one thousand, four hundred forty-seven".