206608004040 has 32 divisors (see below), whose sum is σ = 619824012480. Its totient is φ = 55095467712.

The previous prime is 206608004039. The next prime is 206608004047. The reversal of 206608004040 is 40400806602.

206608004040 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 206608003989 and 206608004007.

It is not an unprimeable number, because it can be changed into a prime (206608004047) by changing a digit.

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, 860866564 + ... + 860866803.

It is an arithmetic number, because the mean of its divisors is an integer number (19369500390).

Almost surely, 2^206608004040 is an apocalyptic number.

206608004040 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206608004040 is an abundant number, since it is smaller than the sum of its proper divisors (413216008440).

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

206608004040 is a wasteful number, since it uses less digits than its factorization.

206608004040 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1721733381 (or 1721733377 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 30.

The spelling of 206608004040 in words is "two hundred six billion, six hundred eight million, four thousand, forty".