204545454545453 has 16 divisors (see below), whose sum is σ = 243931395096576. Its totient is φ = 167700892579440.

The previous prime is 204545454545423. The next prime is 204545454545461. The reversal of 204545454545453 is 354545454545402.

It is a cyclic number.

It is not a de Polignac number, because 204545454545453 - 2¹² = 204545454541357 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 204545454545392 and 204545454545401.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204545454545423) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24910100 + ... + 32087442.

It is an arithmetic number, because the mean of its divisors is an integer number (15245712193536).

Almost surely, 2^{204545454545453} is an apocalyptic number.

204545454545453 is a gapful number since it is divisible by the number (23) formed by its first and last digit.

It is an amenable number.

204545454545453 is a deficient number, since it is larger than the sum of its proper divisors (39385940551123).

204545454545453 is a wasteful number, since it uses less digits than its factorization.

204545454545453 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7354384.

The product of its (nonzero) digits is 384000000, while the sum is 59.

The spelling of 204545454545453 in words is "two hundred four trillion, five hundred forty-five billion, four hundred fifty-four million, five hundred forty-five thousand, four hundred fifty-three".