20690170170029 has 2 divisors, whose sum is σ = 20690170170030. Its totient is φ = 20690170170028.

The previous prime is 20690170169957. The next prime is 20690170170031. The reversal of 20690170170029 is 92007107109602.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20530731277225 + 159438892804 = 4531085^2 + 399298^2 .

It is a cyclic number.

It is not a de Polignac number, because 20690170170029 - 2³⁶ = 20621450693293 is a prime.

Together with 20690170170031, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20690170170629) 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, 10345085085014 + 10345085085015.

It is an arithmetic number, because the mean of its divisors is an integer number (10345085085015).

Almost surely, 2^{20690170170029} is an apocalyptic number.

It is an amenable number.

20690170170029 is a deficient number, since it is larger than the sum of its proper divisors (1).

20690170170029 is an equidigital number, since it uses as much as digits as its factorization.

20690170170029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 95256, while the sum is 44.

The spelling of 20690170170029 in words is "twenty trillion, six hundred ninety billion, one hundred seventy million, one hundred seventy thousand, twenty-nine".