206261845851 has 8 divisors (see below), whose sum is σ = 279677079360. Its totient is φ = 135177254792.

The previous prime is 206261845849. The next prime is 206261845897. The reversal of 206261845851 is 158548162602.

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

It is a cyclic number.

It is not a de Polignac number, because 206261845851 - 2¹ = 206261845849 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 206261845851.

It is not an unprimeable number, because it can be changed into a prime (206261845831) 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, 582660405 + ... + 582660758.

It is an arithmetic number, because the mean of its divisors is an integer number (34959634920).

Almost surely, 2^206261845851 is an apocalyptic number.

206261845851 is a deficient number, since it is larger than the sum of its proper divisors (73415233509).

206261845851 is a wasteful number, since it uses less digits than its factorization.

206261845851 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1165321225.

The product of its (nonzero) digits is 921600, while the sum is 48.

The spelling of 206261845851 in words is "two hundred six billion, two hundred sixty-one million, eight hundred forty-five thousand, eight hundred fifty-one".