169966042065601 has 2 divisors, whose sum is σ = 169966042065602. Its totient is φ = 169966042065600.

The previous prime is 169966042065583. The next prime is 169966042065619. The reversal of 169966042065601 is 106560240669961.

169966042065601 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (169966042065583) and next prime (169966042065619).

It can be written as a sum of positive squares in only one way, i.e., 159290145840400 + 10675896225201 = 12621020^2 + 3267399^2 .

It is a cyclic number.

It is not a de Polignac number, because 169966042065601 - 2²⁷ = 169965907847873 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 169966042065601.

It is not a weakly prime, because it can be changed into another prime (169966042065661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 84983021032800 + 84983021032801.

It is an arithmetic number, because the mean of its divisors is an integer number (84983021032801).

Almost surely, 2^{169966042065601} is an apocalyptic number.

It is an amenable number.

169966042065601 is a deficient number, since it is larger than the sum of its proper divisors (1).

169966042065601 is an equidigital number, since it uses as much as digits as its factorization.

169966042065601 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25194240, while the sum is 61.

The spelling of 169966042065601 in words is "one hundred sixty-nine trillion, nine hundred sixty-six billion, forty-two million, sixty-five thousand, six hundred one".