168393997094401 has 8 divisors (see below), whose sum is σ = 181416256335720. Its totient is φ = 155381577117312.

The previous prime is 168393997094381. The next prime is 168393997094461. The reversal of 168393997094401 is 104490799393861.

It can be written as a sum of positive squares in 4 ways, for example, as 16684153221376 + 151709843873025 = 4084624^2 + 12317055^2 .

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

It is not a de Polignac number, because 168393997094401 - 2¹¹ = 168393997092353 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168393997094461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2459780506 + ... + 2459848963.

It is an arithmetic number, because the mean of its divisors is an integer number (22677032041965).

Almost surely, 2^{168393997094401} is an apocalyptic number.

It is an amenable number.

168393997094401 is a deficient number, since it is larger than the sum of its proper divisors (13022259241319).

168393997094401 is a wasteful number, since it uses less digits than its factorization.

168393997094401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4919632115.

The product of its (nonzero) digits is 317447424, while the sum is 73.

The spelling of 168393997094401 in words is "one hundred sixty-eight trillion, three hundred ninety-three billion, nine hundred ninety-seven million, ninety-four thousand, four hundred one".