40206144666 has 8 divisors (see below), whose sum is σ = 80412289344. Its totient is φ = 13402048220.

The previous prime is 40206144647. The next prime is 40206144673. The reversal of 40206144666 is 66644160204.

It is a sphenic number, since it is the product of 3 distinct primes.

40206144666 is an admirable number.

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 3 ways as a sum of consecutive naturals, for example, 3350512050 + ... + 3350512061.

It is an arithmetic number, because the mean of its divisors is an integer number (10051536168).

Almost surely, 2^40206144666 is an apocalyptic number.

40206144666 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

40206144666 is a wasteful number, since it uses less digits than its factorization.

40206144666 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6701024116.

The product of its (nonzero) digits is 165888, while the sum is 39.

The spelling of 40206144666 in words is "forty billion, two hundred six million, one hundred forty-four thousand, six hundred sixty-six".