205112161170 has 64 divisors (see below), whose sum is σ = 625103735040. Its totient is φ = 46882779264.

The previous prime is 205112161159. The next prime is 205112161213. The reversal of 205112161170 is 71161211502.

205112161170 is a `hidden beast` number, since 2 + 0 + 511 + 21 + 61 + 1 + 70 = 666.

205112161170 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Curzon number.

It is an unprimeable number.

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, 54260587 + ... + 54264366.

It is an arithmetic number, because the mean of its divisors is an integer number (9767245860).

Almost surely, 2^205112161170 is an apocalyptic number.

205112161170 is an abundant number, since it is smaller than the sum of its proper divisors (419991573870).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

205112161170 is a wasteful number, since it uses less digits than its factorization.

205112161170 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 108524976 (or 108524970 counting only the distinct ones).

The product of its (nonzero) digits is 840, while the sum is 27.

Adding to 205112161170 its reverse (71161211502), we get a palindrome (276273372672).

The spelling of 205112161170 in words is "two hundred five billion, one hundred twelve million, one hundred sixty-one thousand, one hundred seventy".