66484849523 has 4 divisors (see below), whose sum is σ = 66539212848. Its totient is φ = 66430486200.

The previous prime is 66484849511. The next prime is 66484849531. The reversal of 66484849523 is 32594848466.

It is a happy number.

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 66484849523 - 2¹⁶ = 66484783987 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66424849523) 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, 27179828 + ... + 27182273.

It is an arithmetic number, because the mean of its divisors is an integer number (16634803212).

Almost surely, 2^66484849523 is an apocalyptic number.

66484849523 is a deficient number, since it is larger than the sum of its proper divisors (54363325).

66484849523 is a wasteful number, since it uses less digits than its factorization.

66484849523 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54363324.

The product of its digits is 39813120, while the sum is 59.

The spelling of 66484849523 in words is "sixty-six billion, four hundred eighty-four million, eight hundred forty-nine thousand, five hundred twenty-three".