105691650091681 has 8 divisors (see below), whose sum is σ = 107502376242240. Its totient is φ = 103881568682928.

The previous prime is 105691650091553. The next prime is 105691650091691. The reversal of 105691650091681 is 186190056196501.

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 105691650091681 - 2⁷ = 105691650091553 is a prime.

It is a super-2 number, since 2×105691650091681² (a number of 29 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105691650091691) 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, 160854781 + ... + 161510506.

It is an arithmetic number, because the mean of its divisors is an integer number (13437797030280).

Almost surely, 2^{105691650091681} is an apocalyptic number.

It is an amenable number.

105691650091681 is a deficient number, since it is larger than the sum of its proper divisors (1810726150559).

105691650091681 is an equidigital number, since it uses as much as digits as its factorization.

105691650091681 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 322370903.

The product of its (nonzero) digits is 3499200, while the sum is 58.

The spelling of 105691650091681 in words is "one hundred five trillion, six hundred ninety-one billion, six hundred fifty million, ninety-one thousand, six hundred eighty-one".