206042024640 has 56 divisors (see below), whose sum is σ = 654183431280. Its totient is φ = 54944539648.

The previous prime is 206042024627. The next prime is 206042024689. The reversal of 206042024640 is 46420240602.

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 = 206042024598 and 206042024607.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 107312595 + ... + 107314514.

Almost surely, 2^206042024640 is an apocalyptic number.

206042024640 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206042024640 is an abundant number, since it is smaller than the sum of its proper divisors (448141406640).

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

206042024640 is a wasteful number, since it uses less digits than its factorization.

206042024640 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 214627129 (or 214627119 counting only the distinct ones).

The product of its (nonzero) digits is 18432, while the sum is 30.

The spelling of 206042024640 in words is "two hundred six billion, forty-two million, twenty-four thousand, six hundred forty".