168040893337 has 2 divisors, whose sum is σ = 168040893338. Its totient is φ = 168040893336.

The previous prime is 168040893301. The next prime is 168040893353. The reversal of 168040893337 is 733398040861.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 157808357001 + 10232536336 = 397251^2 + 101156^2 .

It is a cyclic number.

It is not a de Polignac number, because 168040893337 - 2³⁵ = 133681154969 is a prime.

It is not a weakly prime, because it can be changed into another prime (168040890337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84020446668 + 84020446669.

It is an arithmetic number, because the mean of its divisors is an integer number (84020446669).

Almost surely, 2^168040893337 is an apocalyptic number.

It is an amenable number.

168040893337 is a deficient number, since it is larger than the sum of its proper divisors (1).

168040893337 is an equidigital number, since it uses as much as digits as its factorization.

168040893337 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2612736, while the sum is 52.

The spelling of 168040893337 in words is "one hundred sixty-eight billion, forty million, eight hundred ninety-three thousand, three hundred thirty-seven".