20260170817 has 2 divisors, whose sum is σ = 20260170818. Its totient is φ = 20260170816.

The previous prime is 20260170797. The next prime is 20260170899. The reversal of 20260170817 is 71807106202.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 20179907136 + 80263681 = 142056^2 + 8959^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20260170817 is a prime.

It is not a weakly prime, because it can be changed into another prime (20260180817) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10130085408 + 10130085409.

It is an arithmetic number, because the mean of its divisors is an integer number (10130085409).

Almost surely, 2^20260170817 is an apocalyptic number.

It is an amenable number.

20260170817 is a deficient number, since it is larger than the sum of its proper divisors (1).

20260170817 is an equidigital number, since it uses as much as digits as its factorization.

20260170817 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 9408, while the sum is 34.

The spelling of 20260170817 in words is "twenty billion, two hundred sixty million, one hundred seventy thousand, eight hundred seventeen".