66606004442000 has 80 divisors (see below), whose sum is σ = 162282734025984. Its totient is φ = 26439024560000.

The previous prime is 66606004441957. The next prime is 66606004442009. The reversal of 66606004442000 is 24440060666.

66606004442000 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-3 number, since 3×66606004442000³ (a number of 42 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (66606004442009) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 126848696 + ... + 127372695.

Almost surely, 2^{66606004442000} is an apocalyptic number.

It is an amenable number.

66606004442000 is an abundant number, since it is smaller than the sum of its proper divisors (95676729583984).

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

66606004442000 is a wasteful number, since it uses less digits than its factorization.

66606004442000 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 254221545 (or 254221529 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 38.

The spelling of 66606004442000 in words is "sixty-six trillion, six hundred six billion, four million, four hundred forty-two thousand".