66183651850 has 24 divisors (see below), whose sum is σ = 123109272288. Its totient is φ = 26471809200.

The previous prime is 66183651829. The next prime is 66183651857. The reversal of 66183651850 is 5815638166.

It is a junction number, because it is equal to n+sod(n) for n = 66183651794 and 66183651803.

It is not an unprimeable number, because it can be changed into a prime (66183651857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1057945 + ... + 1118755.

It is an arithmetic number, because the mean of its divisors is an integer number (5129553012).

Almost surely, 2^66183651850 is an apocalyptic number.

66183651850 is a deficient number, since it is larger than the sum of its proper divisors (56925620438).

66183651850 is a wasteful number, since it uses less digits than its factorization.

66183651850 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 82590 (or 82585 counting only the distinct ones).

The product of its (nonzero) digits is 1036800, while the sum is 49.

The spelling of 66183651850 in words is "sixty-six billion, one hundred eighty-three million, six hundred fifty-one thousand, eight hundred fifty".