66903042063 has 24 divisors (see below), whose sum is σ = 105593111344. Its totient is φ = 37428272640.

The previous prime is 66903042043. The next prime is 66903042067. The reversal of 66903042063 is 36024030966.

It is not a de Polignac number, because 66903042063 - 2⁹ = 66903041551 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66903042067) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 7083970 + ... + 7093407.

Almost surely, 2^66903042063 is an apocalyptic number.

66903042063 is a deficient number, since it is larger than the sum of its proper divisors (38690069281).

66903042063 is a wasteful number, since it uses less digits than its factorization.

66903042063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14177415 (or 14177404 counting only the distinct ones).

The product of its (nonzero) digits is 139968, while the sum is 39.

The spelling of 66903042063 in words is "sixty-six billion, nine hundred three million, forty-two thousand, sixty-three".