205313220211146 has 16 divisors (see below), whose sum is σ = 420175892525664. Its totient is φ = 66846164719824.

The previous prime is 205313220211129. The next prime is 205313220211261. The reversal of 205313220211146 is 641112022313502.

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, 397893837361 + ... + 397893837876.

It is an arithmetic number, because the mean of its divisors is an integer number (26260993282854).

Almost surely, 2^{205313220211146} is an apocalyptic number.

205313220211146 is an abundant number, since it is smaller than the sum of its proper divisors (214862672314518).

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

205313220211146 is a wasteful number, since it uses less digits than its factorization.

205313220211146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 795787675285.

The product of its (nonzero) digits is 17280, while the sum is 33.

Adding to 205313220211146 its reverse (641112022313502), we get a palindrome (846425242524648).

The spelling of 205313220211146 in words is "two hundred five trillion, three hundred thirteen billion, two hundred twenty million, two hundred eleven thousand, one hundred forty-six".