206555260040 has 64 divisors (see below), whose sum is σ = 485071545600. Its totient is φ = 79010981632.

The previous prime is 206555260031. The next prime is 206555260061. The reversal of 206555260040 is 40062555602.

206555260040 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4191866 + ... + 4240854.

It is an arithmetic number, because the mean of its divisors is an integer number (7579242900).

Almost surely, 2^206555260040 is an apocalyptic number.

206555260040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206555260040 is an abundant number, since it is smaller than the sum of its proper divisors (278516285560).

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

206555260040 is a wasteful number, since it uses less digits than its factorization.

206555260040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 53606 (or 53602 counting only the distinct ones).

The product of its (nonzero) digits is 72000, while the sum is 35.

The spelling of 206555260040 in words is "two hundred six billion, five hundred fifty-five million, two hundred sixty thousand, forty".