66063436066 has 4 divisors (see below), whose sum is σ = 99095154102. Its totient is φ = 33031718032.

The previous prime is 66063436057. The next prime is 66063436091.

66063436066 is nontrivially palindromic in base 10.

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., 57080377225 + 8983058841 = 238915^2 + 94779^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16515859015 + ... + 16515859018.

Almost surely, 2^66063436066 is an apocalyptic number.

66063436066 is a deficient number, since it is larger than the sum of its proper divisors (33031718036).

66063436066 is a wasteful number, since it uses less digits than its factorization.

66063436066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33031718035.

The product of its (nonzero) digits is 1679616, while the sum is 46.

The spelling of 66063436066 in words is "sixty-six billion, sixty-three million, four hundred thirty-six thousand, sixty-six".