66336653434 has 4 divisors (see below), whose sum is σ = 99504980154. Its totient is φ = 33168326716.

The previous prime is 66336653423. The next prime is 66336653491. The reversal of 66336653434 is 43435663366.

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

It can be written as a sum of positive squares in only one way, i.e., 56431427809 + 9905225625 = 237553^2 + 99525^2 .

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16584163357 + ... + 16584163360.

Almost surely, 2^66336653434 is an apocalyptic number.

66336653434 is a deficient number, since it is larger than the sum of its proper divisors (33168326720).

66336653434 is a wasteful number, since it uses less digits than its factorization.

66336653434 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33168326719.

The product of its digits is 8398080, while the sum is 49.

The spelling of 66336653434 in words is "sixty-six billion, three hundred thirty-six million, six hundred fifty-three thousand, four hundred thirty-four".