66050005066 has 4 divisors (see below), whose sum is σ = 99075007602. Its totient is φ = 33025002532.

The previous prime is 66050005009. The next prime is 66050005081.

66050005066 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., 42341704441 + 23708300625 = 205771^2 + 153975^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16512501265 + ... + 16512501268.

Almost surely, 2^66050005066 is an apocalyptic number.

66050005066 is a deficient number, since it is larger than the sum of its proper divisors (33025002536).

66050005066 is a wasteful number, since it uses less digits than its factorization.

66050005066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33025002535.

The product of its (nonzero) digits is 32400, while the sum is 34.

The spelling of 66050005066 in words is "sixty-six billion, fifty million, five thousand, sixty-six".