17073016821 has 12 divisors (see below), whose sum is σ = 28184027872. Its totient is φ = 9756009576.

The previous prime is 17073016777. The next prime is 17073016847. The reversal of 17073016821 is 12861037071.

It is not a de Polignac number, because 17073016821 - 2¹⁵ = 17072984053 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17073016421) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 135500071 + ... + 135500196.

Almost surely, 2^17073016821 is an apocalyptic number.

It is an amenable number.

17073016821 is a deficient number, since it is larger than the sum of its proper divisors (11111011051).

17073016821 is a wasteful number, since it uses less digits than its factorization.

17073016821 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 271000280 (or 271000277 counting only the distinct ones).

The product of its (nonzero) digits is 14112, while the sum is 36.

The spelling of 17073016821 in words is "seventeen billion, seventy-three million, sixteen thousand, eight hundred twenty-one".