17042051309 has 2 divisors, whose sum is σ = 17042051310. Its totient is φ = 17042051308.

The previous prime is 17042051287. The next prime is 17042051333. The reversal of 17042051309 is 90315024071.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12193018084 + 4849033225 = 110422^2 + 69635^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-17042051309 is a prime.

It is a super-2 number, since 2×17042051309² (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 (17042051359) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8521025654 + 8521025655.

It is an arithmetic number, because the mean of its divisors is an integer number (8521025655).

Almost surely, 2^17042051309 is an apocalyptic number.

It is an amenable number.

17042051309 is a deficient number, since it is larger than the sum of its proper divisors (1).

17042051309 is an equidigital number, since it uses as much as digits as its factorization.

17042051309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7560, while the sum is 32.

The spelling of 17042051309 in words is "seventeen billion, forty-two million, fifty-one thousand, three hundred nine".