206532520420 has 24 divisors (see below), whose sum is σ = 434394947448. Its totient is φ = 82484121600.

The previous prime is 206532520409. The next prime is 206532520451. The reversal of 206532520420 is 24025235602.

206532520420 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 4 ways, for example, as 106428622756 + 100103897664 = 326234^2 + 316392^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8042271 + ... + 8067910.

It is an arithmetic number, because the mean of its divisors is an integer number (18099789477).

Almost surely, 2^206532520420 is an apocalyptic number.

206532520420 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206532520420 is an abundant number, since it is smaller than the sum of its proper divisors (227862427028).

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

206532520420 is a wasteful number, since it uses less digits than its factorization.

206532520420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16110831 (or 16110829 counting only the distinct ones).

The product of its (nonzero) digits is 28800, while the sum is 31.

The spelling of 206532520420 in words is "two hundred six billion, five hundred thirty-two million, five hundred twenty thousand, four hundred twenty".