206440655516 has 6 divisors (see below), whose sum is σ = 361271147160. Its totient is φ = 103220327756.

The previous prime is 206440655453. The next prime is 206440655539. The reversal of 206440655516 is 615556044602.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25805081936 + ... + 25805081943.

It is an arithmetic number, because the mean of its divisors is an integer number (60211857860).

Almost surely, 2^206440655516 is an apocalyptic number.

It is an amenable number.

206440655516 is a deficient number, since it is larger than the sum of its proper divisors (154830491644).

206440655516 is a wasteful number, since it uses less digits than its factorization.

206440655516 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51610163883 (or 51610163881 counting only the distinct ones).

The product of its (nonzero) digits is 864000, while the sum is 44.

The spelling of 206440655516 in words is "two hundred six billion, four hundred forty million, six hundred fifty-five thousand, five hundred sixteen".