204140553453 has 16 divisors (see below), whose sum is σ = 302451634240. Its totient is φ = 136084169232.

The previous prime is 204140553329. The next prime is 204140553469. The reversal of 204140553453 is 354355041402.

204140553453 is a `hidden beast` number, since 20 + 4 + 1 + 40 + 553 + 45 + 3 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-204140553453 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204140553553) 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 15 ways as a sum of consecutive naturals, for example, 138975 + ... + 653907.

It is an arithmetic number, because the mean of its divisors is an integer number (18903227140).

Almost surely, 2^204140553453 is an apocalyptic number.

It is an amenable number.

204140553453 is a deficient number, since it is larger than the sum of its proper divisors (98311080787).

204140553453 is a wasteful number, since it uses less digits than its factorization.

204140553453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 529625 (or 529619 counting only the distinct ones).

The product of its (nonzero) digits is 144000, while the sum is 36.

Adding to 204140553453 its reverse (354355041402), we get a palindrome (558495594855).

The spelling of 204140553453 in words is "two hundred four billion, one hundred forty million, five hundred fifty-three thousand, four hundred fifty-three".