17713728013 has 2 divisors, whose sum is σ = 17713728014. Its totient is φ = 17713728012.

The previous prime is 17713727989. The next prime is 17713728029. The reversal of 17713728013 is 31082731771.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 9888910249 + 7824817764 = 99443^2 + 88458^2 .

It is a cyclic number.

It is not a de Polignac number, because 17713728013 - 2⁵ = 17713727981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (17713728083) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8856864006 + 8856864007.

It is an arithmetic number, because the mean of its divisors is an integer number (8856864007).

Almost surely, 2^17713728013 is an apocalyptic number.

It is an amenable number.

17713728013 is a deficient number, since it is larger than the sum of its proper divisors (1).

17713728013 is an equidigital number, since it uses as much as digits as its factorization.

17713728013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 49392, while the sum is 40.

The spelling of 17713728013 in words is "seventeen billion, seven hundred thirteen million, seven hundred twenty-eight thousand, thirteen".