206831849472 has 156 divisors (see below), whose sum is σ = 598441700844. Its totient is φ = 68828528640.

The previous prime is 206831849459. The next prime is 206831849513. The reversal of 206831849472 is 274948138602.

206831849472 is a `hidden beast` number, since 2 + 0 + 6 + 83 + 1 + 8 + 494 + 72 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 183649959936 + 23181889536 = 428544^2 + 152256^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 23625448 + ... + 23634200.

It is an arithmetic number, because the mean of its divisors is an integer number (3836164749).

Almost surely, 2^206831849472 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206831849472, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (299220850422).

206831849472 is an abundant number, since it is smaller than the sum of its proper divisors (391609851372).

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

206831849472 is an equidigital number, since it uses as much as digits as its factorization.

206831849472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9424 (or 9399 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 206831849472 in words is "two hundred six billion, eight hundred thirty-one million, eight hundred forty-nine thousand, four hundred seventy-two".