66422400016 has 40 divisors (see below), whose sum is σ = 150079779200. Its totient is φ = 28466740512.

The previous prime is 66422399993. The next prime is 66422400041. The reversal of 66422400016 is 61000422466.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 6046116 + ... + 6057091.

It is an arithmetic number, because the mean of its divisors is an integer number (3751994480).

Almost surely, 2^66422400016 is an apocalyptic number.

It is an amenable number.

66422400016 is an abundant number, since it is smaller than the sum of its proper divisors (83657379184).

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

66422400016 is a wasteful number, since it uses less digits than its factorization.

66422400016 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12103236 (or 12103216 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 31.

The spelling of 66422400016 in words is "sixty-six billion, four hundred twenty-two million, four hundred thousand, sixteen".