206434362520 has 16 divisors (see below), whose sum is σ = 464477315760. Its totient is φ = 82573744992.

The previous prime is 206434362499. The next prime is 206434362523. The reversal of 206434362520 is 25263434602.

It is a self number, because there is not a number n which added to its sum of digits gives 206434362520.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206434362523) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2580429492 + ... + 2580429571.

It is an arithmetic number, because the mean of its divisors is an integer number (29029832235).

Almost surely, 2^206434362520 is an apocalyptic number.

206434362520 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206434362520 is an abundant number, since it is smaller than the sum of its proper divisors (258042953240).

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

206434362520 is a wasteful number, since it uses less digits than its factorization.

206434362520 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5160859074 (or 5160859070 counting only the distinct ones).

The product of its (nonzero) digits is 207360, while the sum is 37.

The spelling of 206434362520 in words is "two hundred six billion, four hundred thirty-four million, three hundred sixty-two thousand, five hundred twenty".