206563631541 has 8 divisors (see below), whose sum is σ = 276816237984. Its totient is φ = 137010056400.

The previous prime is 206563631531. The next prime is 206563631591. The reversal of 206563631541 is 145136365602.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 206563631541 - 2³¹ = 204416147893 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 206563631493 and 206563631502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (206563631531) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 174757135 + ... + 174758316.

It is an arithmetic number, because the mean of its divisors is an integer number (34602029748).

Almost surely, 2^206563631541 is an apocalyptic number.

It is an amenable number.

206563631541 is a deficient number, since it is larger than the sum of its proper divisors (70252606443).

206563631541 is a wasteful number, since it uses less digits than its factorization.

206563631541 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 349515651.

The product of its (nonzero) digits is 388800, while the sum is 42.

The spelling of 206563631541 in words is "two hundred six billion, five hundred sixty-three million, six hundred thirty-one thousand, five hundred forty-one".