66654237189 has 8 divisors (see below), whose sum is σ = 88885793920. Its totient is φ = 44429419296.

The previous prime is 66654237179. The next prime is 66654237203. The reversal of 66654237189 is 98173245666.

66654237189 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 66654237189 - 2⁸ = 66654236933 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66654237179) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1661584 + ... + 1701225.

It is an arithmetic number, because the mean of its divisors is an integer number (11110724240).

Almost surely, 2^66654237189 is an apocalyptic number.

It is an amenable number.

66654237189 is a deficient number, since it is larger than the sum of its proper divisors (22231556731).

66654237189 is a wasteful number, since it uses less digits than its factorization.

66654237189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3369419.

The product of its digits is 13063680, while the sum is 57.

The spelling of 66654237189 in words is "sixty-six billion, six hundred fifty-four million, two hundred thirty-seven thousand, one hundred eighty-nine".