66789104063 has 16 divisors (see below), whose sum is σ = 73875110400. Its totient is φ = 59874060480.

The previous prime is 66789104051. The next prime is 66789104069. The reversal of 66789104063 is 36040198766.

It is a cyclic number.

It is not a de Polignac number, because 66789104063 - 2¹² = 66789099967 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 (66789104069) 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, 655520 + ... + 750522.

It is an arithmetic number, because the mean of its divisors is an integer number (4617194400).

Almost surely, 2^66789104063 is an apocalyptic number.

66789104063 is a deficient number, since it is larger than the sum of its proper divisors (7086006337).

66789104063 is a wasteful number, since it uses less digits than its factorization.

66789104063 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 95902.

The product of its (nonzero) digits is 1306368, while the sum is 50.

The spelling of 66789104063 in words is "sixty-six billion, seven hundred eighty-nine million, one hundred four thousand, sixty-three".