66495859466 has 4 divisors (see below), whose sum is σ = 99743789202. Its totient is φ = 33247929732.

The previous prime is 66495859411. The next prime is 66495859481.

66495859466 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., 51153321241 + 15342538225 = 226171^2 + 123865^2 .

It is a super-2 number, since 2×66495859466² (a number of 22 digits) contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 66495859396 and 66495859405.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 16623964865 + ... + 16623964868.

Almost surely, 2^66495859466 is an apocalyptic number.

66495859466 is a deficient number, since it is larger than the sum of its proper divisors (33247929736).

66495859466 is a wasteful number, since it uses less digits than its factorization.

66495859466 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33247929735.

The product of its digits is 335923200, while the sum is 68.

The spelling of 66495859466 in words is "sixty-six billion, four hundred ninety-five million, eight hundred fifty-nine thousand, four hundred sixty-six".