17208979973 has 2 divisors, whose sum is σ = 17208979974. Its totient is φ = 17208979972.

The previous prime is 17208979969. The next prime is 17208980027. The reversal of 17208979973 is 37997980271.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 17208979489 + 484 = 131183^2 + 22^2 .

It is a cyclic number.

It is not a de Polignac number, because 17208979973 - 2² = 17208979969 is a prime.

It is a super-2 number, since 2×17208979973² (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 (17208979903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8604489986 + 8604489987.

It is an arithmetic number, because the mean of its divisors is an integer number (8604489987).

Almost surely, 2^17208979973 is an apocalyptic number.

It is an amenable number.

17208979973 is a deficient number, since it is larger than the sum of its proper divisors (1).

17208979973 is an equidigital number, since it uses as much as digits as its factorization.

17208979973 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 12002256, while the sum is 62.

The spelling of 17208979973 in words is "seventeen billion, two hundred eight million, nine hundred seventy-nine thousand, nine hundred seventy-three".