19802034630217 has 32 divisors (see below), whose sum is σ = 23299560048128. Its totient is φ = 16473974939136.

The previous prime is 19802034630187. The next prime is 19802034630229. The reversal of 19802034630217 is 71203643020891.

It is a cyclic number.

It is not a de Polignac number, because 19802034630217 - 2⁴³ = 11005941608009 is a prime.

It is not an unprimeable number, because it can be changed into a prime (19802034630317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 176374423 + ... + 176486659.

It is an arithmetic number, because the mean of its divisors is an integer number (728111251504).

Almost surely, 2^{19802034630217} is an apocalyptic number.

It is an amenable number.

19802034630217 is a deficient number, since it is larger than the sum of its proper divisors (3497525417911).

19802034630217 is a wasteful number, since it uses less digits than its factorization.

19802034630217 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113945.

The product of its (nonzero) digits is 435456, while the sum is 46.

The spelling of 19802034630217 in words is "nineteen trillion, eight hundred two billion, thirty-four million, six hundred thirty thousand, two hundred seventeen".