168148402273 has 4 divisors (see below), whose sum is σ = 168164114580. Its totient is φ = 168132689968.

The previous prime is 168148402267. The next prime is 168148402297. The reversal of 168148402273 is 372204841861.

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 98054780769 + 70093621504 = 313137^2 + 264752^2 .

It is a cyclic number.

It is not a de Polignac number, because 168148402273 - 2⁵ = 168148402241 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (168148402223) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7840090 + ... + 7861507.

It is an arithmetic number, because the mean of its divisors is an integer number (42041028645).

Almost surely, 2^168148402273 is an apocalyptic number.

It is an amenable number.

168148402273 is a deficient number, since it is larger than the sum of its proper divisors (15712307).

168148402273 is a wasteful number, since it uses less digits than its factorization.

168148402273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15712306.

The product of its (nonzero) digits is 516096, while the sum is 46.

The spelling of 168148402273 in words is "one hundred sixty-eight billion, one hundred forty-eight million, four hundred two thousand, two hundred seventy-three".