204823286421 has 48 divisors (see below), whose sum is σ = 315219988800. Its totient is φ = 117833763840.

The previous prime is 204823286413. The next prime is 204823286471. The reversal of 204823286421 is 124682328402.

It is not a de Polignac number, because 204823286421 - 2³ = 204823286413 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204823286401) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 1204486 + ... + 1363976.

It is an arithmetic number, because the mean of its divisors is an integer number (6567083100).

Almost surely, 2^204823286421 is an apocalyptic number.

It is an amenable number.

204823286421 is a deficient number, since it is larger than the sum of its proper divisors (110396702379).

204823286421 is a wasteful number, since it uses less digits than its factorization.

204823286421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 159686 (or 159673 counting only the distinct ones).

The product of its (nonzero) digits is 294912, while the sum is 42.

The spelling of 204823286421 in words is "two hundred four billion, eight hundred twenty-three million, two hundred eighty-six thousand, four hundred twenty-one".