66576630532 has 6 divisors (see below), whose sum is σ = 116509103438. Its totient is φ = 33288315264.

The previous prime is 66576630521. The next prime is 66576630641. The reversal of 66576630532 is 23503667566.

It can be written as a sum of positive squares in only one way, i.e., 64174062276 + 2402568256 = 253326^2 + 49016^2 .

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, 8322078813 + ... + 8322078820.

Almost surely, 2^66576630532 is an apocalyptic number.

It is an amenable number.

66576630532 is a deficient number, since it is larger than the sum of its proper divisors (49932472906).

66576630532 is a wasteful number, since it uses less digits than its factorization.

66576630532 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16644157637 (or 16644157635 counting only the distinct ones).

The product of its (nonzero) digits is 4082400, while the sum is 49.

The spelling of 66576630532 in words is "sixty-six billion, five hundred seventy-six million, six hundred thirty thousand, five hundred thirty-two".