204040042404402 has 64 divisors (see below), whose sum is σ = 419336243472384. Its totient is φ = 66155225981760.

The previous prime is 204040042404353. The next prime is 204040042404403. The reversal of 204040042404402 is 204404240040402.

It is a self number, because there is not a number n which added to its sum of digits gives 204040042404402.

It is not an unprimeable number, because it can be changed into a prime (204040042404403) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 1383089148 + ... + 1383236664.

It is an arithmetic number, because the mean of its divisors is an integer number (6552128804256).

Almost surely, 2^{204040042404402} is an apocalyptic number.

204040042404402 is an abundant number, since it is smaller than the sum of its proper divisors (215296201067982).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204040042404402 is a wasteful number, since it uses less digits than its factorization.

204040042404402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 177823.

The product of its (nonzero) digits is 32768, while the sum is 30.

Adding to 204040042404402 its reverse (204404240040402), we get a palindrome (408444282444804).

The spelling of 204040042404402 in words is "two hundred four trillion, forty billion, forty-two million, four hundred four thousand, four hundred two".