168874848641 has 2 divisors, whose sum is σ = 168874848642. Its totient is φ = 168874848640.

The previous prime is 168874848619. The next prime is 168874848677. The reversal of 168874848641 is 146848478861.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 108319974400 + 60554874241 = 329120^2 + 246079^2 .

It is a cyclic number.

It is not a de Polignac number, because 168874848641 - 2⁶ = 168874848577 is a prime.

It is not a weakly prime, because it can be changed into another prime (168874848041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84437424320 + 84437424321.

It is an arithmetic number, because the mean of its divisors is an integer number (84437424321).

Almost surely, 2^168874848641 is an apocalyptic number.

It is an amenable number.

168874848641 is a deficient number, since it is larger than the sum of its proper divisors (1).

168874848641 is an equidigital number, since it uses as much as digits as its factorization.

168874848641 is an evil number, because the sum of its binary digits is even.

The product of its digits is 66060288, while the sum is 65.

The spelling of 168874848641 in words is "one hundred sixty-eight billion, eight hundred seventy-four million, eight hundred forty-eight thousand, six hundred forty-one".