204668812371 has 4 divisors (see below), whose sum is σ = 272891749832. Its totient is φ = 136445874912.

The previous prime is 204668812357. The next prime is 204668812379. The reversal of 204668812371 is 173218866402.

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

It is not a de Polignac number, because 204668812371 - 2¹⁵ = 204668779603 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 204668812371.

It is not an unprimeable number, because it can be changed into a prime (204668812379) 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, 34111468726 + ... + 34111468731.

It is an arithmetic number, because the mean of its divisors is an integer number (68222937458).

Almost surely, 2^204668812371 is an apocalyptic number.

204668812371 is a deficient number, since it is larger than the sum of its proper divisors (68222937461).

204668812371 is an equidigital number, since it uses as much as digits as its factorization.

204668812371 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68222937460.

The product of its (nonzero) digits is 774144, while the sum is 48.

The spelling of 204668812371 in words is "two hundred four billion, six hundred sixty-eight million, eight hundred twelve thousand, three hundred seventy-one".