205102251320 has 16 divisors (see below), whose sum is σ = 461480065560. Its totient is φ = 82040900512.

The previous prime is 205102251311. The next prime is 205102251331. The reversal of 205102251320 is 23152201502.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2563778102 + ... + 2563778181.

Almost surely, 2^205102251320 is an apocalyptic number.

205102251320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

205102251320 is an abundant number, since it is smaller than the sum of its proper divisors (256377814240).

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

205102251320 is a wasteful number, since it uses less digits than its factorization.

205102251320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5127556294 (or 5127556290 counting only the distinct ones).

The product of its (nonzero) digits is 1200, while the sum is 23.

Adding to 205102251320 its reverse (23152201502), we get a palindrome (228254452822).

The spelling of 205102251320 in words is "two hundred five billion, one hundred two million, two hundred fifty-one thousand, three hundred twenty".