206216461026563 has 4 divisors (see below), whose sum is σ = 222079265720928. Its totient is φ = 190353656332200.

The previous prime is 206216461026523. The next prime is 206216461026593. The reversal of 206216461026563 is 365620164612602.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 206216461026563 - 2¹⁴ = 206216461010179 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (206216461026523) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7931402347163 + ... + 7931402347188.

It is an arithmetic number, because the mean of its divisors is an integer number (55519816430232).

Almost surely, 2^{206216461026563} is an apocalyptic number.

206216461026563 is a deficient number, since it is larger than the sum of its proper divisors (15862804694365).

206216461026563 is a wasteful number, since it uses less digits than its factorization.

206216461026563 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15862804694364.

The product of its (nonzero) digits is 3732480, while the sum is 50.

The spelling of 206216461026563 in words is "two hundred six trillion, two hundred sixteen billion, four hundred sixty-one million, twenty-six thousand, five hundred sixty-three".