168374355293 has 4 divisors (see below), whose sum is σ = 170887405440. Its totient is φ = 165861305148.

The previous prime is 168374355251. The next prime is 168374355299. The reversal of 168374355293 is 392553473861.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 392553473861 = 553253 ⋅709537.

It is a cyclic number.

It is not a de Polignac number, because 168374355293 - 2¹⁶ = 168374289757 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (168374355299) 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, 1256524973 + ... + 1256525106.

It is an arithmetic number, because the mean of its divisors is an integer number (42721851360).

Almost surely, 2^168374355293 is an apocalyptic number.

It is an amenable number.

168374355293 is a deficient number, since it is larger than the sum of its proper divisors (2513050147).

168374355293 is an equidigital number, since it uses as much as digits as its factorization.

168374355293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2513050146.

The product of its digits is 16329600, while the sum is 56.

The spelling of 168374355293 in words is "one hundred sixty-eight billion, three hundred seventy-four million, three hundred fifty-five thousand, two hundred ninety-three".