16841664991 has 8 divisors (see below), whose sum is σ = 17136861840. Its totient is φ = 16546793088.

The previous prime is 16841664989. The next prime is 16841665003. The reversal of 16841664991 is 19946614861.

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 16841664991 - 2¹ = 16841664989 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 (16841665991) 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, 24525 + ... + 185161.

It is an arithmetic number, because the mean of its divisors is an integer number (2142107730).

Almost surely, 2^16841664991 is an apocalyptic number.

16841664991 is a deficient number, since it is larger than the sum of its proper divisors (295196849).

16841664991 is a wasteful number, since it uses less digits than its factorization.

16841664991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 162473.

The product of its digits is 2239488, while the sum is 55.

The spelling of 16841664991 in words is "sixteen billion, eight hundred forty-one million, six hundred sixty-four thousand, nine hundred ninety-one".