204365563604 has 6 divisors (see below), whose sum is σ = 357639736314. Its totient is φ = 102182781800.

The previous prime is 204365563583. The next prime is 204365563697. The reversal of 204365563604 is 406365563402.

It can be written as a sum of positive squares in only one way, i.e., 159528348100 + 44837215504 = 399410^2 + 211748^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 25545695447 + ... + 25545695454.

It is an arithmetic number, because the mean of its divisors is an integer number (59606622719).

Almost surely, 2^204365563604 is an apocalyptic number.

It is an amenable number.

204365563604 is a deficient number, since it is larger than the sum of its proper divisors (153274172710).

204365563604 is a wasteful number, since it uses less digits than its factorization.

204365563604 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51091390905 (or 51091390903 counting only the distinct ones).

The product of its (nonzero) digits is 1555200, while the sum is 44.

The spelling of 204365563604 in words is "two hundred four billion, three hundred sixty-five million, five hundred sixty-three thousand, six hundred four".