204912620144 has 20 divisors (see below), whose sum is σ = 406701573600. Its totient is φ = 99957375360.

The previous prime is 204912620137. The next prime is 204912620161. The reversal of 204912620144 is 441026219402.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 156182744 + ... + 156184055.

It is an arithmetic number, because the mean of its divisors is an integer number (20335078680).

Almost surely, 2^204912620144 is an apocalyptic number.

It is an amenable number.

204912620144 is a deficient number, since it is larger than the sum of its proper divisors (201788953456).

204912620144 is a wasteful number, since it uses less digits than its factorization.

204912620144 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 312366848 (or 312366842 counting only the distinct ones).

The product of its (nonzero) digits is 27648, while the sum is 35.

Adding to 204912620144 its reverse (441026219402), we get a palindrome (645938839546).

The spelling of 204912620144 in words is "two hundred four billion, nine hundred twelve million, six hundred twenty thousand, one hundred forty-four".