66673734032 has 10 divisors (see below), whose sum is σ = 129180359718. Its totient is φ = 33336867008.

The previous prime is 66673734011. The next prime is 66673734041. The reversal of 66673734032 is 23043737666.

It can be written as a sum of positive squares in only one way, i.e., 65938022656 + 735711376 = 256784^2 + 27124^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2083554173 + ... + 2083554204.

Almost surely, 2^66673734032 is an apocalyptic number.

It is an amenable number.

66673734032 is a deficient number, since it is larger than the sum of its proper divisors (62506625686).

66673734032 is a wasteful number, since it uses less digits than its factorization.

66673734032 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4167108385 (or 4167108379 counting only the distinct ones).

The product of its (nonzero) digits is 2286144, while the sum is 47.

The spelling of 66673734032 in words is "sixty-six billion, six hundred seventy-three million, seven hundred thirty-four thousand, thirty-two".