169811241601 has 4 divisors (see below), whose sum is σ = 170515852804. Its totient is φ = 169106630400.

The previous prime is 169811241529. The next prime is 169811241637. The reversal of 169811241601 is 106142118961.

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

It can be written as a sum of positive squares in 2 ways, for example, as 70318310976 + 99492930625 = 265176^2 + 315425^2 .

It is a cyclic number.

It is not a de Polignac number, because 169811241601 - 2¹³ = 169811233409 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (169811241661) 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 3 ways as a sum of consecutive naturals, for example, 352305240 + ... + 352305721.

It is an arithmetic number, because the mean of its divisors is an integer number (42628963201).

Almost surely, 2^169811241601 is an apocalyptic number.

It is an amenable number.

169811241601 is a deficient number, since it is larger than the sum of its proper divisors (704611203).

169811241601 is an equidigital number, since it uses as much as digits as its factorization.

169811241601 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704611202.

The product of its (nonzero) digits is 20736, while the sum is 40.

The spelling of 169811241601 in words is "one hundred sixty-nine billion, eight hundred eleven million, two hundred forty-one thousand, six hundred one".