205135522311320 has 32 divisors (see below), whose sum is σ = 465189215961600. Its totient is φ = 81408112789248.

The previous prime is 205135522311283. The next prime is 205135522311323. The reversal of 205135522311320 is 23113225531502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (205135522311323) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20190499085 + ... + 20190509244.

It is an arithmetic number, because the mean of its divisors is an integer number (14537162998800).

Almost surely, 2^{205135522311320} is an apocalyptic number.

205135522311320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205135522311320 is an abundant number, since it is smaller than the sum of its proper divisors (260053693650280).

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

205135522311320 is a wasteful number, since it uses less digits than its factorization.

205135522311320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40381008467 (or 40381008463 counting only the distinct ones).

The product of its (nonzero) digits is 54000, while the sum is 35.

Adding to 205135522311320 its reverse (23113225531502), we get a palindrome (228248747842822).

The spelling of 205135522311320 in words is "two hundred five trillion, one hundred thirty-five billion, five hundred twenty-two million, three hundred eleven thousand, three hundred twenty".