168732438353 has 2 divisors, whose sum is σ = 168732438354. Its totient is φ = 168732438352.

The previous prime is 168732438349. The next prime is 168732438419. The reversal of 168732438353 is 353834237861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 126342569809 + 42389868544 = 355447^2 + 205888^2 .

It is a cyclic number.

It is not a de Polignac number, because 168732438353 - 2² = 168732438349 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 168732438295 and 168732438304.

It is not a weakly prime, because it can be changed into another prime (168732438323) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84366219176 + 84366219177.

It is an arithmetic number, because the mean of its divisors is an integer number (84366219177).

Almost surely, 2^168732438353 is an apocalyptic number.

It is an amenable number.

168732438353 is a deficient number, since it is larger than the sum of its proper divisors (1).

168732438353 is an equidigital number, since it uses as much as digits as its factorization.

168732438353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8709120, while the sum is 53.

The spelling of 168732438353 in words is "one hundred sixty-eight billion, seven hundred thirty-two million, four hundred thirty-eight thousand, three hundred fifty-three".