66216630533099 has 16 divisors (see below), whose sum is σ = 66647225836800. Its totient is φ = 65787033042720.

The previous prime is 66216630533071. The next prime is 66216630533113. The reversal of 66216630533099 is 99033503661266.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-66216630533099 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (66216630536099) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1882687784 + ... + 1882722954.

It is an arithmetic number, because the mean of its divisors is an integer number (4165451614800).

Almost surely, 2^{66216630533099} is an apocalyptic number.

66216630533099 is a deficient number, since it is larger than the sum of its proper divisors (430595303701).

66216630533099 is a wasteful number, since it uses less digits than its factorization.

66216630533099 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49010.

The product of its (nonzero) digits is 28343520, while the sum is 59.

The spelling of 66216630533099 in words is "sixty-six trillion, two hundred sixteen billion, six hundred thirty million, five hundred thirty-three thousand, ninety-nine".