20839205170 has 16 divisors (see below), whose sum is σ = 42869222208. Its totient is φ = 7144870320.

The previous prime is 20839205159. The next prime is 20839205201. The reversal of 20839205170 is 7150293802.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 148851396 + ... + 148851535.

It is an arithmetic number, because the mean of its divisors is an integer number (2679326388).

Almost surely, 2^20839205170 is an apocalyptic number.

20839205170 is an abundant number, since it is smaller than the sum of its proper divisors (22030017038).

20839205170 is a wasteful number, since it uses less digits than its factorization.

20839205170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 297702945.

The product of its (nonzero) digits is 30240, while the sum is 37.

Adding to 20839205170 its reverse (7150293802), we get a palindrome (27989498972).

The spelling of 20839205170 in words is "twenty billion, eight hundred thirty-nine million, two hundred five thousand, one hundred seventy".