3991163394005 has 8 divisors (see below), whose sum is σ = 4793486085024. Its totient is φ = 3190204040400.

The previous prime is 3991163393989. The next prime is 3991163394011. The reversal of 3991163394005 is 5004933611993.

3991163394005 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 not a de Polignac number, because 3991163394005 - 2⁴ = 3991163393989 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

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, 340827911 + ... + 340839620.

It is an arithmetic number, because the mean of its divisors is an integer number (599185760628).

Almost surely, 2^{3991163394005} is an apocalyptic number.

It is an amenable number.

3991163394005 is a deficient number, since it is larger than the sum of its proper divisors (802322691019).

3991163394005 is a wasteful number, since it uses less digits than its factorization.

3991163394005 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681668707.

The product of its (nonzero) digits is 2361960, while the sum is 53.

The spelling of 3991163394005 in words is "three trillion, nine hundred ninety-one billion, one hundred sixty-three million, three hundred ninety-four thousand, five".