66100133 has 4 divisors (see below), whose sum is σ = 72109248. Its totient is φ = 60091020.

The previous prime is 66100117. The next prime is 66100187. The reversal of 66100133 is 33100166.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 66100133 - 2⁴ = 66100117 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 (66100633) 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, 3004541 + ... + 3004562.

It is an arithmetic number, because the mean of its divisors is an integer number (18027312).

Almost surely, 2^66100133 is an apocalyptic number.

It is an amenable number.

66100133 is a deficient number, since it is larger than the sum of its proper divisors (6009115).

66100133 is a wasteful number, since it uses less digits than its factorization.

66100133 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6009114.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 66100133 is about 8130.1988290570. The cubic root of 66100133 is about 404.3282732809.

Adding to 66100133 its reverse (33100166), we get a palindrome (99200299).

The spelling of 66100133 in words is "sixty-six million, one hundred thousand, one hundred thirty-three".