66617222303 has 4 divisors (see below), whose sum is σ = 66670560000. Its totient is φ = 66563884608.

The previous prime is 66617222281. The next prime is 66617222389. The reversal of 66617222303 is 30322271666.

It is a happy number.

66617222303 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 66617222303 - 2⁸ = 66617222047 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 (66617212303) 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, 26666975 + ... + 26669472.

It is an arithmetic number, because the mean of its divisors is an integer number (16667640000).

Almost surely, 2^66617222303 is an apocalyptic number.

66617222303 is a deficient number, since it is larger than the sum of its proper divisors (53337697).

66617222303 is a wasteful number, since it uses less digits than its factorization.

66617222303 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 53337696.

The product of its (nonzero) digits is 108864, while the sum is 38.

Adding to 66617222303 its reverse (30322271666), we get a palindrome (96939493969).

The spelling of 66617222303 in words is "sixty-six billion, six hundred seventeen million, two hundred twenty-two thousand, three hundred three".