168034690561 has 4 divisors (see below), whose sum is σ = 168047596612. Its totient is φ = 168021784512.

The previous prime is 168034690547. The next prime is 168034690609. The reversal of 168034690561 is 165096430861.

168034690561 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 143617502961 + 24417187600 = 378969^2 + 156260^2 .

It is a cyclic number.

It is not a de Polignac number, because 168034690561 - 2⁵ = 168034690529 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168034690661) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6433476 + ... + 6459541.

It is an arithmetic number, because the mean of its divisors is an integer number (42011899153).

Almost surely, 2^168034690561 is an apocalyptic number.

It is an amenable number.

168034690561 is a deficient number, since it is larger than the sum of its proper divisors (12906051).

168034690561 is a wasteful number, since it uses less digits than its factorization.

168034690561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12906050.

The product of its (nonzero) digits is 933120, while the sum is 49.

The spelling of 168034690561 in words is "one hundred sixty-eight billion, thirty-four million, six hundred ninety thousand, five hundred sixty-one".