66423052100 has 72 divisors (see below), whose sum is σ = 148855639296. Its totient is φ = 25700400000.

The previous prime is 66423052099. The next prime is 66423052139. The reversal of 66423052100 is 125032466.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10229855 + ... + 10236345.

Almost surely, 2^66423052100 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 66423052100, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (74427819648).

66423052100 is an abundant number, since it is smaller than the sum of its proper divisors (82432587196).

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

66423052100 is a wasteful number, since it uses less digits than its factorization.

66423052100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9837 (or 9830 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 29.

Adding to 66423052100 its reverse (125032466), we get a palindrome (66548084566).

The spelling of 66423052100 in words is "sixty-six billion, four hundred twenty-three million, fifty-two thousand, one hundred".