168273243053 has 4 divisors (see below), whose sum is σ = 168274449180. Its totient is φ = 168272036928.

The previous prime is 168273243043. The next prime is 168273243107. The reversal of 168273243053 is 350342372861.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 350342372861 = 13 ⋅26949413297.

It can be written as a sum of positive squares in 2 ways, for example, as 896523364 + 167376719689 = 29942^2 + 409117^2 .

It is a cyclic number.

It is not a de Polignac number, because 168273243053 - 2¹⁰ = 168273242029 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 168273242995 and 168273243013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168273243023) 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, 361550 + ... + 683567.

It is an arithmetic number, because the mean of its divisors is an integer number (42068612295).

Almost surely, 2^168273243053 is an apocalyptic number.

It is an amenable number.

168273243053 is a deficient number, since it is larger than the sum of its proper divisors (1206127).

168273243053 is a wasteful number, since it uses less digits than its factorization.

168273243053 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1206126.

The product of its (nonzero) digits is 725760, while the sum is 44.

The spelling of 168273243053 in words is "one hundred sixty-eight billion, two hundred seventy-three million, two hundred forty-three thousand, fifty-three".