205165510210 has 8 divisors (see below), whose sum is σ = 369297918396. Its totient is φ = 82066204080.

The previous prime is 205165510201. The next prime is 205165510213. The reversal of 205165510210 is 12015561502.

205165510210 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 204777065529 + 388444681 = 452523^2 + 19709^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-2 number, since 2×205165510210² (a number of 23 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (205165510213) 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 3 ways as a sum of consecutive naturals, for example, 10258275501 + ... + 10258275520.

Almost surely, 2^205165510210 is an apocalyptic number.

205165510210 is a deficient number, since it is larger than the sum of its proper divisors (164132408186).

205165510210 is a wasteful number, since it uses less digits than its factorization.

205165510210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20516551028.

The product of its (nonzero) digits is 3000, while the sum is 28.

The spelling of 205165510210 in words is "two hundred five billion, one hundred sixty-five million, five hundred ten thousand, two hundred ten".