205164313180 has 12 divisors (see below), whose sum is σ = 430845057720. Its totient is φ = 82065725264.

The previous prime is 205164313163. The next prime is 205164313201. The reversal of 205164313180 is 81313461502.

It is a super-2 number, since 2×205164313180² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5129107810 + ... + 5129107849.

It is an arithmetic number, because the mean of its divisors is an integer number (35903754810).

Almost surely, 2^205164313180 is an apocalyptic number.

205164313180 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205164313180 is an abundant number, since it is smaller than the sum of its proper divisors (225680744540).

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

205164313180 is a wasteful number, since it uses less digits than its factorization.

205164313180 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10258215668 (or 10258215666 counting only the distinct ones).

The product of its (nonzero) digits is 17280, while the sum is 34.

Adding to 205164313180 its reverse (81313461502), we get a palindrome (286477774682).

The spelling of 205164313180 in words is "two hundred five billion, one hundred sixty-four million, three hundred thirteen thousand, one hundred eighty".