168001790401 has 8 divisors (see below), whose sum is σ = 168662970504. Its totient is φ = 167341870080.

The previous prime is 168001790393. The next prime is 168001790419. The reversal of 168001790401 is 104097100861.

It can be written as a sum of positive squares in 4 ways, for example, as 8149756176 + 159852034225 = 90276^2 + 399815^2 .

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 168001790401 - 2³ = 168001790393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168001790441) 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, 47260 + ... + 581581.

It is an arithmetic number, because the mean of its divisors is an integer number (21082871313).

Almost surely, 2^168001790401 is an apocalyptic number.

It is an amenable number.

168001790401 is a deficient number, since it is larger than the sum of its proper divisors (661180103).

168001790401 is an equidigital number, since it uses as much as digits as its factorization.

168001790401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 629891.

The product of its (nonzero) digits is 12096, while the sum is 37.

The spelling of 168001790401 in words is "one hundred sixty-eight billion, one million, seven hundred ninety thousand, four hundred one".