206655604886428 has 6 divisors (see below), whose sum is σ = 361647308551256. Its totient is φ = 103327802443212.

The previous prime is 206655604886411. The next prime is 206655604886449. The reversal of 206655604886428 is 824688406556602.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25831950610800 + ... + 25831950610807.

Almost surely, 2^{206655604886428} is an apocalyptic number.

It is an amenable number.

206655604886428 is a deficient number, since it is larger than the sum of its proper divisors (154991703664828).

206655604886428 is a wasteful number, since it uses less digits than its factorization.

206655604886428 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51663901221611 (or 51663901221609 counting only the distinct ones).

The product of its (nonzero) digits is 1061683200, while the sum is 70.

The spelling of 206655604886428 in words is "two hundred six trillion, six hundred fifty-five billion, six hundred four million, eight hundred eighty-six thousand, four hundred twenty-eight".