401166345643 has 8 divisors (see below), whose sum is σ = 459704984288. Its totient is φ = 342934997184.

The previous prime is 401166345611. The next prime is 401166345647. The reversal of 401166345643 is 346543661104.

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 401166345643 - 2⁵ = 401166345611 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 401166345643.

It is not an unprimeable number, because it can be changed into a prime (401166345647) 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, 76819746 + ... + 76824967.

It is an arithmetic number, because the mean of its divisors is an integer number (57463123036).

Almost surely, 2^401166345643 is an apocalyptic number.

401166345643 is a deficient number, since it is larger than the sum of its proper divisors (58538638645).

401166345643 is a wasteful number, since it uses less digits than its factorization.

401166345643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 153645093.

The product of its (nonzero) digits is 622080, while the sum is 43.

The spelling of 401166345643 in words is "four hundred one billion, one hundred sixty-six million, three hundred forty-five thousand, six hundred forty-three".