204513456653 has 8 divisors (see below), whose sum is σ = 223893951456. Its totient is φ = 185264355600.

The previous prime is 204513456643. The next prime is 204513456671. The reversal of 204513456653 is 356654315402.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204513456653 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204513456613) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 32845178 + ... + 32851403.

It is an arithmetic number, because the mean of its divisors is an integer number (27986743932).

Almost surely, 2^204513456653 is an apocalyptic number.

It is an amenable number.

204513456653 is a deficient number, since it is larger than the sum of its proper divisors (19380494803).

204513456653 is a wasteful number, since it uses less digits than its factorization.

204513456653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 65696875.

The product of its (nonzero) digits is 1296000, while the sum is 44.

It can be divided in two parts, 204513 and 456653, that added together give a palindrome (661166).

The spelling of 204513456653 in words is "two hundred four billion, five hundred thirteen million, four hundred fifty-six thousand, six hundred fifty-three".