66546183849 has 4 divisors (see below), whose sum is σ = 88728245136. Its totient is φ = 44364122564.

The previous prime is 66546183841. The next prime is 66546183871. The reversal of 66546183849 is 94838164566.

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 66546183849 - 2³ = 66546183841 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66546183792 and 66546183801.

It is not an unprimeable number, because it can be changed into a prime (66546183841) 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, 11091030639 + ... + 11091030644.

It is an arithmetic number, because the mean of its divisors is an integer number (22182061284).

Almost surely, 2^66546183849 is an apocalyptic number.

It is an amenable number.

66546183849 is a deficient number, since it is larger than the sum of its proper divisors (22182061287).

66546183849 is a wasteful number, since it uses less digits than its factorization.

66546183849 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22182061286.

The product of its digits is 29859840, while the sum is 60.

The spelling of 66546183849 in words is "sixty-six billion, five hundred forty-six million, one hundred eighty-three thousand, eight hundred forty-nine".