206130431355240 has 64 divisors (see below), whose sum is σ = 706732907506560. Its totient is φ = 47115527166720.

The previous prime is 206130431355209. The next prime is 206130431355269. The reversal of 206130431355240 is 42553134031602.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 122696684491 + ... + 122696686170.

It is an arithmetic number, because the mean of its divisors is an integer number (11042701679790).

Almost surely, 2^{206130431355240} is an apocalyptic number.

206130431355240 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206130431355240 is an abundant number, since it is smaller than the sum of its proper divisors (500602476151320).

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

206130431355240 is a wasteful number, since it uses less digits than its factorization.

206130431355240 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245393370682 (or 245393370678 counting only the distinct ones).

The product of its (nonzero) digits is 259200, while the sum is 39.

Adding to 206130431355240 its reverse (42553134031602), we get a palindrome (248683565386842).

The spelling of 206130431355240 in words is "two hundred six trillion, one hundred thirty billion, four hundred thirty-one million, three hundred fifty-five thousand, two hundred forty".