204285421497 has 8 divisors (see below), whose sum is σ = 272812229440. Its totient is φ = 135974447280.

The previous prime is 204285421451. The next prime is 204285421513. The reversal of 204285421497 is 794124582402.

It is a happy number.

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

It is not a de Polignac number, because 204285421497 - 2¹⁰ = 204285420473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204285421427) 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, 53956222 + ... + 53960007.

It is an arithmetic number, because the mean of its divisors is an integer number (34101528680).

Almost surely, 2^204285421497 is an apocalyptic number.

It is an amenable number.

204285421497 is a deficient number, since it is larger than the sum of its proper divisors (68526807943).

204285421497 is a wasteful number, since it uses less digits than its factorization.

204285421497 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 107916863.

The product of its (nonzero) digits is 1290240, while the sum is 48.

The spelling of 204285421497 in words is "two hundred four billion, two hundred eighty-five million, four hundred twenty-one thousand, four hundred ninety-seven".