168455388853 has 2 divisors, whose sum is σ = 168455388854. Its totient is φ = 168455388852.

The previous prime is 168455388841. The next prime is 168455388911. The reversal of 168455388853 is 358883554861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 121677485329 + 46777903524 = 348823^2 + 216282^2 .

It is a cyclic number.

It is not a de Polignac number, because 168455388853 - 2⁹ = 168455388341 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168455388833) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84227694426 + 84227694427.

It is an arithmetic number, because the mean of its divisors is an integer number (84227694427).

Almost surely, 2^168455388853 is an apocalyptic number.

It is an amenable number.

168455388853 is a deficient number, since it is larger than the sum of its proper divisors (1).

168455388853 is an equidigital number, since it uses as much as digits as its factorization.

168455388853 is an evil number, because the sum of its binary digits is even.

The product of its digits is 110592000, while the sum is 64.

The spelling of 168455388853 in words is "one hundred sixty-eight billion, four hundred fifty-five million, three hundred eighty-eight thousand, eight hundred fifty-three".