17670416521 has 2 divisors, whose sum is σ = 17670416522. Its totient is φ = 17670416520.

The previous prime is 17670416513. The next prime is 17670416527. The reversal of 17670416521 is 12561407671.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 13759290000 + 3911126521 = 117300^2 + 62539^2 .

It is a cyclic number.

It is not a de Polignac number, because 17670416521 - 2³ = 17670416513 is a prime.

It is not a weakly prime, because it can be changed into another prime (17670416527) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8835208260 + 8835208261.

It is an arithmetic number, because the mean of its divisors is an integer number (8835208261).

Almost surely, 2^17670416521 is an apocalyptic number.

It is an amenable number.

17670416521 is a deficient number, since it is larger than the sum of its proper divisors (1).

17670416521 is an equidigital number, since it uses as much as digits as its factorization.

17670416521 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 70560, while the sum is 40.

The spelling of 17670416521 in words is "seventeen billion, six hundred seventy million, four hundred sixteen thousand, five hundred twenty-one".