66253235266 has 4 divisors (see below), whose sum is σ = 99379852902. Its totient is φ = 33126617632.

The previous prime is 66253235249. The next prime is 66253235287.

66253235266 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., 65533440025 + 719795241 = 255995^2 + 26829^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16563308815 + ... + 16563308818.

Almost surely, 2^66253235266 is an apocalyptic number.

66253235266 is a deficient number, since it is larger than the sum of its proper divisors (33126617636).

66253235266 is a wasteful number, since it uses less digits than its factorization.

66253235266 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33126617635.

The product of its digits is 2332800, while the sum is 46.

The spelling of 66253235266 in words is "sixty-six billion, two hundred fifty-three million, two hundred thirty-five thousand, two hundred sixty-six".