40569198666 has 8 divisors (see below), whose sum is σ = 81138397344. Its totient is φ = 13523066220.

The previous prime is 40569198661. The next prime is 40569198739. The reversal of 40569198666 is 66689196504.

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

40569198666 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (40569198661) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3380766550 + ... + 3380766561.

It is an arithmetic number, because the mean of its divisors is an integer number (10142299668).

Almost surely, 2^40569198666 is an apocalyptic number.

40569198666 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.

40569198666 is a wasteful number, since it uses less digits than its factorization.

40569198666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6761533116.

The product of its (nonzero) digits is 16796160, while the sum is 60.

The spelling of 40569198666 in words is "forty billion, five hundred sixty-nine million, one hundred ninety-eight thousand, six hundred sixty-six".