20517173883 has 40 divisors (see below), whose sum is σ = 32286478400. Its totient is φ = 12948474672.

The previous prime is 20517173879. The next prime is 20517173899. The reversal of 20517173883 is 38837171502.

20517173883 is a `hidden beast` number, since 20 + 517 + 1 + 7 + 38 + 83 = 666.

It is not a de Polignac number, because 20517173883 - 2² = 20517173879 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (20517173863) by changing a digit.

It is a polite number, since it can be written in 39 ways as a sum of consecutive naturals, for example, 2425860 + ... + 2434302.

It is an arithmetic number, because the mean of its divisors is an integer number (807161960).

Almost surely, 2^20517173883 is an apocalyptic number.

20517173883 is a deficient number, since it is larger than the sum of its proper divisors (11769304517).

20517173883 is a wasteful number, since it uses less digits than its factorization.

20517173883 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10053 (or 10044 counting only the distinct ones).

The product of its (nonzero) digits is 282240, while the sum is 45.

The spelling of 20517173883 in words is "twenty billion, five hundred seventeen million, one hundred seventy-three thousand, eight hundred eighty-three".