205545430110 has 16 divisors (see below), whose sum is σ = 493309032336. Its totient is φ = 54812114688.

The previous prime is 205545430109. The next prime is 205545430117. The reversal of 205545430110 is 11034545502.

It is a super-2 number, since 2×205545430110² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (30), and also a Moran number because the ratio is a prime number: 6851514337 = 205545430110 / (2 + 0 + 5 + 5 + 4 + 5 + 4 + 3 + 0 + 1 + 1 + 0).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205545430117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3425757139 + ... + 3425757198.

It is an arithmetic number, because the mean of its divisors is an integer number (30831814521).

Almost surely, 2^205545430110 is an apocalyptic number.

205545430110 is an abundant number, since it is smaller than the sum of its proper divisors (287763602226).

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

205545430110 is a wasteful number, since it uses less digits than its factorization.

205545430110 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6851514347.

The product of its (nonzero) digits is 12000, while the sum is 30.

Adding to 205545430110 its reverse (11034545502), we get a palindrome (216579975612).

The spelling of 205545430110 in words is "two hundred five billion, five hundred forty-five million, four hundred thirty thousand, one hundred ten".