66036140216 has 32 divisors (see below), whose sum is σ = 125194567680. Its totient is φ = 32652597600.

The previous prime is 66036140197. The next prime is 66036140237. The reversal of 66036140216 is 61204163066.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 211481 + ... + 420471.

It is an arithmetic number, because the mean of its divisors is an integer number (3912330240).

Almost surely, 2^66036140216 is an apocalyptic number.

It is an amenable number.

66036140216 is a deficient number, since it is larger than the sum of its proper divisors (59158427464).

66036140216 is a wasteful number, since it uses less digits than its factorization.

66036140216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 209435 (or 209431 counting only the distinct ones).

The product of its (nonzero) digits is 31104, while the sum is 35.

The spelling of 66036140216 in words is "sixty-six billion, thirty-six million, one hundred forty thousand, two hundred sixteen".