204440423434 has 16 divisors (see below), whose sum is σ = 347631490080. Its totient is φ = 89390954160.

The previous prime is 204440423423. The next prime is 204440423443. The reversal of 204440423434 is 434324044402.

It is a self number, because there is not a number n which added to its sum of digits gives 204440423434.

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, 206923012 + ... + 206923999.

It is an arithmetic number, because the mean of its divisors is an integer number (21726968130).

Almost surely, 2^204440423434 is an apocalyptic number.

204440423434 is a deficient number, since it is larger than the sum of its proper divisors (143191066646).

204440423434 is a wasteful number, since it uses less digits than its factorization.

204440423434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 413847045.

The product of its (nonzero) digits is 147456, while the sum is 34.

Adding to 204440423434 its reverse (434324044402), we get a palindrome (638764467836).

The spelling of 204440423434 in words is "two hundred four billion, four hundred forty million, four hundred twenty-three thousand, four hundred thirty-four".