171801408401 has 4 divisors (see below), whose sum is σ = 196344466752. Its totient is φ = 147258350052.

The previous prime is 171801408397. The next prime is 171801408403. The reversal of 171801408401 is 104804108171.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 171801408401 - 2² = 171801408397 is a prime.

It is not an unprimeable number, because it can be changed into a prime (171801408403) 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 3 ways as a sum of consecutive naturals, for example, 12271529165 + ... + 12271529178.

It is an arithmetic number, because the mean of its divisors is an integer number (49086116688).

Almost surely, 2^171801408401 is an apocalyptic number.

It is an amenable number.

171801408401 is a deficient number, since it is larger than the sum of its proper divisors (24543058351).

171801408401 is an equidigital number, since it uses as much as digits as its factorization.

171801408401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24543058350.

The product of its (nonzero) digits is 7168, while the sum is 35.

The spelling of 171801408401 in words is "one hundred seventy-one billion, eight hundred one million, four hundred eight thousand, four hundred one".