66423010512 has 20 divisors (see below), whose sum is σ = 171592777280. Its totient is φ = 22141003488.

The previous prime is 66423010447. The next prime is 66423010519. The reversal of 66423010512 is 21501032466.

It is a self number, because there is not a number n which added to its sum of digits gives 66423010512.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66423010519) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 691906312 + ... + 691906407.

It is an arithmetic number, because the mean of its divisors is an integer number (8579638864).

Almost surely, 2^66423010512 is an apocalyptic number.

It is an amenable number.

66423010512 is an abundant number, since it is smaller than the sum of its proper divisors (105169766768).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66423010512 is a wasteful number, since it uses less digits than its factorization.

66423010512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1383812730 (or 1383812724 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 30.

Adding to 66423010512 its reverse (21501032466), we get a palindrome (87924042978).

The spelling of 66423010512 in words is "sixty-six billion, four hundred twenty-three million, ten thousand, five hundred twelve".