206081901320 has 32 divisors (see below), whose sum is σ = 467787688920. Its totient is φ = 81703265280.

The previous prime is 206081901301. The next prime is 206081901331. The reversal of 206081901320 is 23109180602.

206081901320 is digitally balanced in base 2, 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 48741159076 + 157340742244 = 220774^2 + 396662^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 22792151 + ... + 22801190.

Almost surely, 2^206081901320 is an apocalyptic number.

206081901320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206081901320 is an abundant number, since it is smaller than the sum of its proper divisors (261705787600).

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

206081901320 is a wasteful number, since it uses less digits than its factorization.

206081901320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 45593465 (or 45593461 counting only the distinct ones).

The product of its (nonzero) digits is 5184, while the sum is 32.

The spelling of 206081901320 in words is "two hundred six billion, eighty-one million, nine hundred one thousand, three hundred twenty".