66562323241 has 4 divisors (see below), whose sum is σ = 66563215300. Its totient is φ = 66561431184.

The previous prime is 66562323229. The next prime is 66562323251. The reversal of 66562323241 is 14232326566.

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

It can be written as a sum of positive squares in 2 ways, for example, as 15883308841 + 50679014400 = 126029^2 + 225120^2 .

It is a cyclic number.

It is not a de Polignac number, because 66562323241 - 2¹¹ = 66562321193 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 66562323194 and 66562323203.

It is not an unprimeable number, because it can be changed into a prime (66562323251) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 322746 + ... + 487123.

It is an arithmetic number, because the mean of its divisors is an integer number (16640803825).

Almost surely, 2^66562323241 is an apocalyptic number.

It is an amenable number.

66562323241 is a deficient number, since it is larger than the sum of its proper divisors (892059).

66562323241 is an equidigital number, since it uses as much as digits as its factorization.

66562323241 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 892058.

The product of its digits is 311040, while the sum is 40.

The spelling of 66562323241 in words is "sixty-six billion, five hundred sixty-two million, three hundred twenty-three thousand, two hundred forty-one".