206520046449 has 16 divisors (see below), whose sum is σ = 284070431232. Its totient is φ = 133358220288.

The previous prime is 206520046417. The next prime is 206520046457. The reversal of 206520046449 is 944640025602.

It is not a de Polignac number, because 206520046449 - 2⁵ = 206520046417 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 206520046449.

It is not an unprimeable number, because it can be changed into a prime (206520047449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 4146864 + ... + 4196369.

It is an arithmetic number, because the mean of its divisors is an integer number (17754401952).

Almost surely, 2^206520046449 is an apocalyptic number.

It is an amenable number.

206520046449 is a deficient number, since it is larger than the sum of its proper divisors (77550384783).

206520046449 is a wasteful number, since it uses less digits than its factorization.

206520046449 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8343496.

The product of its (nonzero) digits is 414720, while the sum is 42.

The spelling of 206520046449 in words is "two hundred six billion, five hundred twenty million, forty-six thousand, four hundred forty-nine".