161343410691 has 8 divisors (see below), whose sum is σ = 215128825600. Its totient is φ = 107560134792.

The previous prime is 161343410647. The next prime is 161343410717. The reversal of 161343410691 is 196014343161.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 161343410691 - 2¹⁴ = 161343394307 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (161343410191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 349591 + ... + 667008.

It is an arithmetic number, because the mean of its divisors is an integer number (26891103200).

Almost surely, 2^161343410691 is an apocalyptic number.

161343410691 is a deficient number, since it is larger than the sum of its proper divisors (53785414909).

161343410691 is a wasteful number, since it uses less digits than its factorization.

161343410691 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1069505.

The product of its (nonzero) digits is 46656, while the sum is 39.

The spelling of 161343410691 in words is "one hundred sixty-one billion, three hundred forty-three million, four hundred ten thousand, six hundred ninety-one".