66301043223 has 4 divisors (see below), whose sum is σ = 88401390968. Its totient is φ = 44200695480.

The previous prime is 66301043209. The next prime is 66301043227. The reversal of 66301043223 is 32234010366.

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

It is not a de Polignac number, because 66301043223 - 2¹⁴ = 66301026839 is a prime.

It is a super-2 number, since 2×66301043223² (a number of 22 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (66301043227) 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, 11050173868 + ... + 11050173873.

It is an arithmetic number, because the mean of its divisors is an integer number (22100347742).

Almost surely, 2^66301043223 is an apocalyptic number.

66301043223 is a deficient number, since it is larger than the sum of its proper divisors (22100347745).

66301043223 is a wasteful number, since it uses less digits than its factorization.

66301043223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22100347744.

The product of its (nonzero) digits is 15552, while the sum is 30.

Adding to 66301043223 its reverse (32234010366), we get a palindrome (98535053589).

The spelling of 66301043223 in words is "sixty-six billion, three hundred one million, forty-three thousand, two hundred twenty-three".