40208666066 has 16 divisors (see below), whose sum is σ = 60509065344. Its totient is φ = 20039035824.

The previous prime is 40208666041. The next prime is 40208666129. The reversal of 40208666066 is 66066680204.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1493561 + ... + 1520243.

It is an arithmetic number, because the mean of its divisors is an integer number (3781816584).

Almost surely, 2^40208666066 is an apocalyptic number.

40208666066 is a deficient number, since it is larger than the sum of its proper divisors (20300399278).

40208666066 is a wasteful number, since it uses less digits than its factorization.

40208666066 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29105.

The product of its (nonzero) digits is 497664, while the sum is 44.

The spelling of 40208666066 in words is "forty billion, two hundred eight million, six hundred sixty-six thousand, sixty-six".