168993341357 has 2 divisors, whose sum is σ = 168993341358. Its totient is φ = 168993341356.

The previous prime is 168993341269. The next prime is 168993341471. The reversal of 168993341357 is 753143399861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 159887219881 + 9106121476 = 399859^2 + 95426^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-168993341357 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 168993341296 and 168993341305.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (168993343357) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84496670678 + 84496670679.

It is an arithmetic number, because the mean of its divisors is an integer number (84496670679).

Almost surely, 2^168993341357 is an apocalyptic number.

It is an amenable number.

168993341357 is a deficient number, since it is larger than the sum of its proper divisors (1).

168993341357 is an equidigital number, since it uses as much as digits as its factorization.

168993341357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 14696640, while the sum is 59.

The spelling of 168993341357 in words is "one hundred sixty-eight billion, nine hundred ninety-three million, three hundred forty-one thousand, three hundred fifty-seven".