204544220014451 has 4 divisors (see below), whose sum is σ = 204758851935672. Its totient is φ = 204329588093232.

The previous prime is 204544220014417. The next prime is 204544220014469. The reversal of 204544220014451 is 154410022445402.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204544220014451 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (204544220014481) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 107315959181 + ... + 107315961086.

It is an arithmetic number, because the mean of its divisors is an integer number (51189712983918).

Almost surely, 2^{204544220014451} is an apocalyptic number.

204544220014451 is a deficient number, since it is larger than the sum of its proper divisors (214631921221).

204544220014451 is an equidigital number, since it uses as much as digits as its factorization.

204544220014451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 214631921220.

The product of its (nonzero) digits is 204800, while the sum is 38.

Adding to 204544220014451 its reverse (154410022445402), we get a palindrome (358954242459853).

The spelling of 204544220014451 in words is "two hundred four trillion, five hundred forty-four billion, two hundred twenty million, fourteen thousand, four hundred fifty-one".