168426426293 has 2 divisors, whose sum is σ = 168426426294. Its totient is φ = 168426426292.

The previous prime is 168426426251. The next prime is 168426426319. The reversal of 168426426293 is 392624624861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 165036625009 + 3389801284 = 406247^2 + 58222^2 .

It is a cyclic number.

It is not a de Polignac number, because 168426426293 - 2¹⁸ = 168426164149 is a prime.

It is a super-3 number, since 3×168426426293³ (a number of 35 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168426420293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84213213146 + 84213213147.

It is an arithmetic number, because the mean of its divisors is an integer number (84213213147).

Almost surely, 2^168426426293 is an apocalyptic number.

It is an amenable number.

168426426293 is a deficient number, since it is larger than the sum of its proper divisors (1).

168426426293 is an equidigital number, since it uses as much as digits as its factorization.

168426426293 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5971968, while the sum is 53.

The spelling of 168426426293 in words is "one hundred sixty-eight billion, four hundred twenty-six million, four hundred twenty-six thousand, two hundred ninety-three".