66031849063 has 16 divisors (see below), whose sum is σ = 69921792000. Its totient is φ = 62183959200.

The previous prime is 66031849061. The next prime is 66031849067. The reversal of 66031849063 is 36094813066.

It is a cyclic number.

It is not a de Polignac number, because 66031849063 - 2¹ = 66031849061 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 (66031849061) 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 15 ways as a sum of consecutive naturals, for example, 4344345 + ... + 4359517.

It is an arithmetic number, because the mean of its divisors is an integer number (4370112000).

Almost surely, 2^66031849063 is an apocalyptic number.

66031849063 is a deficient number, since it is larger than the sum of its proper divisors (3889942937).

66031849063 is a wasteful number, since it uses less digits than its factorization.

66031849063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16542.

The product of its (nonzero) digits is 559872, while the sum is 46.

The spelling of 66031849063 in words is "sixty-six billion, thirty-one million, eight hundred forty-nine thousand, sixty-three".