204204669493 has 16 divisors (see below), whose sum is σ = 239952863232. Its totient is φ = 171841230000.

The previous prime is 204204669491. The next prime is 204204669503. The reversal of 204204669493 is 394966402402.

It is not a de Polignac number, because 204204669493 - 2¹ = 204204669491 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204204669491) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13010433 + ... + 13026118.

It is an arithmetic number, because the mean of its divisors is an integer number (14997053952).

Almost surely, 2^204204669493 is an apocalyptic number.

204204669493 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

204204669493 is a deficient number, since it is larger than the sum of its proper divisors (35748193739).

204204669493 is a wasteful number, since it uses less digits than its factorization.

204204669493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26036616.

The product of its (nonzero) digits is 2239488, while the sum is 49.

The spelling of 204204669493 in words is "two hundred four billion, two hundred four million, six hundred sixty-nine thousand, four hundred ninety-three".