20705717119 has 2 divisors, whose sum is σ = 20705717120. Its totient is φ = 20705717118.

The previous prime is 20705717107. The next prime is 20705717159. The reversal of 20705717119 is 91171750702.

It is an a-pointer prime, because the next prime (20705717159) can be obtained adding 20705717119 to its sum of digits (40).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20705717119 - 2¹¹ = 20705715071 is a prime.

It is a super-2 number, since 2×20705717119² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20705717159) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10352858559 + 10352858560.

It is an arithmetic number, because the mean of its divisors is an integer number (10352858560).

Almost surely, 2^20705717119 is an apocalyptic number.

20705717119 is a deficient number, since it is larger than the sum of its proper divisors (1).

20705717119 is an equidigital number, since it uses as much as digits as its factorization.

20705717119 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 30870, while the sum is 40.

The spelling of 20705717119 in words is "twenty billion, seven hundred five million, seven hundred seventeen thousand, one hundred nineteen".