105161101691 has 4 divisors (see below), whose sum is σ = 105199780800. Its totient is φ = 105122422584.

The previous prime is 105161101663. The next prime is 105161101741. The reversal of 105161101691 is 196101161501.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 105161101691 - 2¹⁸ = 105160839547 is a prime.

It is a super-2 number, since 2×105161101691² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (105161101651) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 19335476 + ... + 19340913.

It is an arithmetic number, because the mean of its divisors is an integer number (26299945200).

Almost surely, 2^105161101691 is an apocalyptic number.

105161101691 is a deficient number, since it is larger than the sum of its proper divisors (38679109).

105161101691 is an equidigital number, since it uses as much as digits as its factorization.

105161101691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38679108.

The product of its (nonzero) digits is 1620, while the sum is 32.

The spelling of 105161101691 in words is "one hundred five billion, one hundred sixty-one million, one hundred one thousand, six hundred ninety-one".