206040363820 has 24 divisors (see below), whose sum is σ = 434574226800. Its totient is φ = 82056247872.

The previous prime is 206040363751. The next prime is 206040363833. The reversal of 206040363820 is 28363040602.

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, 22488910 + ... + 22498069.

It is an arithmetic number, because the mean of its divisors is an integer number (18107259450).

Almost surely, 2^206040363820 is an apocalyptic number.

206040363820 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

206040363820 is an abundant number, since it is smaller than the sum of its proper divisors (228533862980).

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

206040363820 is a wasteful number, since it uses less digits than its factorization.

206040363820 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 44987217 (or 44987215 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 34.

The spelling of 206040363820 in words is "two hundred six billion, forty million, three hundred sixty-three thousand, eight hundred twenty".