40566188161 has 8 divisors (see below), whose sum is σ = 41027577344. Its totient is φ = 40106098080.

The previous prime is 40566188147. The next prime is 40566188177. The reversal of 40566188161 is 16188166504.

It is a happy number.

40566188161 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 40566188161 - 2⁵ = 40566188129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40566185161) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 261900 + ... + 386941.

It is an arithmetic number, because the mean of its divisors is an integer number (5128447168).

Almost surely, 2^40566188161 is an apocalyptic number.

It is an amenable number.

40566188161 is a deficient number, since it is larger than the sum of its proper divisors (461389183).

40566188161 is a wasteful number, since it uses less digits than its factorization.

40566188161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 649551.

The product of its (nonzero) digits is 276480, while the sum is 46.

The spelling of 40566188161 in words is "forty billion, five hundred sixty-six million, one hundred eighty-eight thousand, one hundred sixty-one".