8405180666101 has 16 divisors (see below), whose sum is σ = 8573217767296. Its totient is φ = 8238478476096.

The previous prime is 8405180666087. The next prime is 8405180666119. The reversal of 8405180666101 is 1016660815048.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 8405180666101 - 2²³ = 8405172277493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8405180966101) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13180915 + ... + 13803871.

It is an arithmetic number, because the mean of its divisors is an integer number (535826110456).

Almost surely, 2^{8405180666101} is an apocalyptic number.

It is an amenable number.

8405180666101 is a deficient number, since it is larger than the sum of its proper divisors (168037101195).

8405180666101 is a wasteful number, since it uses less digits than its factorization.

8405180666101 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 624028.

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

The spelling of 8405180666101 in words is "eight trillion, four hundred five billion, one hundred eighty million, six hundred sixty-six thousand, one hundred one".