66624204241 has 4 divisors (see below), whose sum is σ = 76141947712. Its totient is φ = 57106460772.

The previous prime is 66624204239. The next prime is 66624204271. The reversal of 66624204241 is 14240242666.

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 a cyclic number.

It is not a de Polignac number, because 66624204241 - 2¹ = 66624204239 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 66624204241.

It is not an unprimeable number, because it can be changed into a prime (66624204271) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4758871725 + ... + 4758871738.

It is an arithmetic number, because the mean of its divisors is an integer number (19035486928).

Almost surely, 2^66624204241 is an apocalyptic number.

It is an amenable number.

66624204241 is a deficient number, since it is larger than the sum of its proper divisors (9517743471).

66624204241 is an equidigital number, since it uses as much as digits as its factorization.

66624204241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9517743470.

The product of its (nonzero) digits is 110592, while the sum is 37.

The spelling of 66624204241 in words is "sixty-six billion, six hundred twenty-four million, two hundred four thousand, two hundred forty-one".