66128202033 has 16 divisors (see below), whose sum is σ = 88754776896. Its totient is φ = 43793809920.

The previous prime is 66128201999. The next prime is 66128202073. The reversal of 66128202033 is 33020282166.

It is a happy number.

It is not a de Polignac number, because 66128202033 - 2¹² = 66128197937 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66128201985 and 66128202003.

It is not an unprimeable number, because it can be changed into a prime (66128202073) 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 15 ways as a sum of consecutive naturals, for example, 1013353 + ... + 1076633.

It is an arithmetic number, because the mean of its divisors is an integer number (5547173556).

Almost surely, 2^66128202033 is an apocalyptic number.

It is an amenable number.

66128202033 is a deficient number, since it is larger than the sum of its proper divisors (22626574863).

66128202033 is a wasteful number, since it uses less digits than its factorization.

66128202033 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65584.

The product of its (nonzero) digits is 20736, while the sum is 33.

Adding to 66128202033 its reverse (33020282166), we get a palindrome (99148484199).

The spelling of 66128202033 in words is "sixty-six billion, one hundred twenty-eight million, two hundred two thousand, thirty-three".