66278307013 has 8 divisors (see below), whose sum is σ = 66641310720. Its totient is φ = 65915470320.

The previous prime is 66278306971. The next prime is 66278307019. The reversal of 66278307013 is 31070387266.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66278307013 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66278307019) 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 7 ways as a sum of consecutive naturals, for example, 800368 + ... + 879286.

It is an arithmetic number, because the mean of its divisors is an integer number (8330163840).

Almost surely, 2^66278307013 is an apocalyptic number.

It is an amenable number.

66278307013 is a deficient number, since it is larger than the sum of its proper divisors (363003707).

66278307013 is a wasteful number, since it uses less digits than its factorization.

66278307013 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83507.

The product of its (nonzero) digits is 254016, while the sum is 43.

The spelling of 66278307013 in words is "sixty-six billion, two hundred seventy-eight million, three hundred seven thousand, thirteen".