66015022412216 has 16 divisors (see below), whose sum is σ = 123778258671600. Its totient is φ = 33007486766464.

The previous prime is 66015022412153. The next prime is 66015022412231. The reversal of 66015022412216 is 61221422051066.

It is a self number, because there is not a number n which added to its sum of digits gives 66015022412216.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14075120 + ... + 18169728.

It is an arithmetic number, because the mean of its divisors is an integer number (7736141166975).

Almost surely, 2^{66015022412216} is an apocalyptic number.

It is an amenable number.

66015022412216 is a deficient number, since it is larger than the sum of its proper divisors (57763236259384).

66015022412216 is a wasteful number, since it uses less digits than its factorization.

66015022412216 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6109918 (or 6109914 counting only the distinct ones).

The product of its (nonzero) digits is 69120, while the sum is 38.

The spelling of 66015022412216 in words is "sixty-six trillion, fifteen billion, twenty-two million, four hundred twelve thousand, two hundred sixteen".