206942849931220 has 96 divisors (see below), whose sum is σ = 472399524576000. Its totient is φ = 75692931922944.

The previous prime is 206942849931157. The next prime is 206942849931221. The reversal of 206942849931220 is 22139948249602.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206942849931221) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 919310641 + ... + 919535719.

It is an arithmetic number, because the mean of its divisors is an integer number (4920828381000).

Almost surely, 2^{206942849931220} is an apocalyptic number.

206942849931220 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 206942849931220, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (236199762288000).

206942849931220 is an abundant number, since it is smaller than the sum of its proper divisors (265456674644780).

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

206942849931220 is a wasteful number, since it uses less digits than its factorization.

206942849931220 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 258257 (or 258255 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 61.

The spelling of 206942849931220 in words is "two hundred six trillion, nine hundred forty-two billion, eight hundred forty-nine million, nine hundred thirty-one thousand, two hundred twenty".