168161607041 has 2 divisors, whose sum is σ = 168161607042. Its totient is φ = 168161607040.

The previous prime is 168161607007. The next prime is 168161607049. The reversal of 168161607041 is 140706161861.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 132584102641 + 35577504400 = 364121^2 + 188620^2 .

It is an emirp because it is prime and its reverse (140706161861) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 168161607041 - 2³⁴ = 150981737857 is a prime.

It is a super-2 number, since 2×168161607041² (a number of 23 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 168161607041.

It is not a weakly prime, because it can be changed into another prime (168161607049) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84080803520 + 84080803521.

It is an arithmetic number, because the mean of its divisors is an integer number (84080803521).

Almost surely, 2^168161607041 is an apocalyptic number.

It is an amenable number.

168161607041 is a deficient number, since it is larger than the sum of its proper divisors (1).

168161607041 is an equidigital number, since it uses as much as digits as its factorization.

168161607041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48384, while the sum is 41.

The spelling of 168161607041 in words is "one hundred sixty-eight billion, one hundred sixty-one million, six hundred seven thousand, forty-one".