66733646712 has 64 divisors (see below), whose sum is σ = 169398130080. Its totient is φ = 21903685632.

The previous prime is 66733646689. The next prime is 66733646729. The reversal of 66733646712 is 21764633766.

66733646712 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1042908 + ... + 1105044.

Almost surely, 2^66733646712 is an apocalyptic number.

It is an amenable number.

66733646712 is an abundant number, since it is smaller than the sum of its proper divisors (102664483368).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

66733646712 is a wasteful number, since it uses less digits than its factorization.

66733646712 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62832 (or 62828 counting only the distinct ones).

The product of its digits is 4572288, while the sum is 51.

The spelling of 66733646712 in words is "sixty-six billion, seven hundred thirty-three million, six hundred forty-six thousand, seven hundred twelve".