17020040813 has 2 divisors, whose sum is σ = 17020040814. Its totient is φ = 17020040812.

The previous prime is 17020040797. The next prime is 17020040881. The reversal of 17020040813 is 31804002071.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 14732618884 + 2287421929 = 121378^2 + 47827^2 .

It is a cyclic number.

It is not a de Polignac number, because 17020040813 - 2⁴ = 17020040797 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17020040413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8510020406 + 8510020407.

It is an arithmetic number, because the mean of its divisors is an integer number (8510020407).

Almost surely, 2^17020040813 is an apocalyptic number.

It is an amenable number.

17020040813 is a deficient number, since it is larger than the sum of its proper divisors (1).

17020040813 is an equidigital number, since it uses as much as digits as its factorization.

17020040813 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1344, while the sum is 26.

Adding to 17020040813 its reverse (31804002071), we get a palindrome (48824042884).

The spelling of 17020040813 in words is "seventeen billion, twenty million, forty thousand, eight hundred thirteen".