20690170170030 has 192 divisors, whose sum is σ = 57223184211648. Its totient is φ = 5375678192640.

The previous prime is 20690170170029. The next prime is 20690170170031. The reversal of 20690170170030 is 3007107109602.

It is a happy number.

20690170170030 is a `hidden beast` number, since 206 + 90 + 170 + 170 + 0 + 30 = 666.

It is an interprime number because it is at equal distance from previous prime (20690170170029) and next prime (20690170170031).

It is a super-2 number, since 2×20690170170030² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20690170170031) 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 in 95 ways as a sum of consecutive naturals, for example, 75282744 + ... + 75557076.

It is an arithmetic number, because the mean of its divisors is an integer number (298037417769).

Almost surely, 2^{20690170170030} is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 20690170170030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (28611592105824).

20690170170030 is an abundant number, since it is smaller than the sum of its proper divisors (36533014041618).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

20690170170030 is a wasteful number, since it uses less digits than its factorization.

20690170170030 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 275153 (or 275141 counting only the distinct ones).

The product of its (nonzero) digits is 15876, while the sum is 36.

Adding to 20690170170030 its reverse (3007107109602), we get a palindrome (23697277279632).

The spelling of 20690170170030 in words is "twenty trillion, six hundred ninety billion, one hundred seventy million, one hundred seventy thousand, thirty".