66034204402 has 4 divisors (see below), whose sum is σ = 99051306606. Its totient is φ = 33017102200.

The previous prime is 66034204393. The next prime is 66034204403. The reversal of 66034204402 is 20440243066.

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., 66034094841 + 109561 = 256971^2 + 331^2 .

It is not an unprimeable number, because it can be changed into a prime (66034204403) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16508551099 + ... + 16508551102.

Almost surely, 2^66034204402 is an apocalyptic number.

66034204402 is a deficient number, since it is larger than the sum of its proper divisors (33017102204).

66034204402 is a wasteful number, since it uses less digits than its factorization.

66034204402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33017102203.

The product of its (nonzero) digits is 27648, while the sum is 31.

Adding to 66034204402 its reverse (20440243066), we get a palindrome (86474447468).

The spelling of 66034204402 in words is "sixty-six billion, thirty-four million, two hundred four thousand, four hundred two".