205103514140 has 96 divisors (see below), whose sum is σ = 512478766464. Its totient is φ = 67483238400.

The previous prime is 205103514127. The next prime is 205103514221. The reversal of 205103514140 is 41415301502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 106940 + ... + 649340.

It is an arithmetic number, because the mean of its divisors is an integer number (5338320484).

Almost surely, 2^205103514140 is an apocalyptic number.

205103514140 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 205103514140, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (256239383232).

205103514140 is an abundant number, since it is smaller than the sum of its proper divisors (307375252324).

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

205103514140 is a wasteful number, since it uses less digits than its factorization.

205103514140 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 542527 (or 542525 counting only the distinct ones).

The product of its (nonzero) digits is 2400, while the sum is 26.

Adding to 205103514140 its reverse (41415301502), we get a palindrome (246518815642).

The spelling of 205103514140 in words is "two hundred five billion, one hundred three million, five hundred fourteen thousand, one hundred forty".