204819861994 has 16 divisors (see below), whose sum is σ = 341483545440. Its totient is φ = 91343334160.

The previous prime is 204819861943. The next prime is 204819862061. The reversal of 204819861994 is 499168918402.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87828964 + ... + 87831295.

It is an arithmetic number, because the mean of its divisors is an integer number (21342721590).

Almost surely, 2^204819861994 is an apocalyptic number.

204819861994 is a deficient number, since it is larger than the sum of its proper divisors (136663683446).

204819861994 is a wasteful number, since it uses less digits than its factorization.

204819861994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 175660325.

The product of its (nonzero) digits is 8957952, while the sum is 61.

The spelling of 204819861994 in words is "two hundred four billion, eight hundred nineteen million, eight hundred sixty-one thousand, nine hundred ninety-four".