204451459851 has 16 divisors (see below), whose sum is σ = 273592800000. Its totient is φ = 135806291808.

The previous prime is 204451459841. The next prime is 204451459853. The reversal of 204451459851 is 158954154402.

204451459851 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 204451459851 - 2¹¹ = 204451457803 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 204451459851.

It is not an unprimeable number, because it can be changed into a prime (204451459853) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1012650 + ... + 1197648.

It is an arithmetic number, because the mean of its divisors is an integer number (17099550000).

Almost surely, 2^204451459851 is an apocalyptic number.

204451459851 is a deficient number, since it is larger than the sum of its proper divisors (69141340149).

204451459851 is a wasteful number, since it uses less digits than its factorization.

204451459851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 186338.

The product of its (nonzero) digits is 1152000, while the sum is 48.

The spelling of 204451459851 in words is "two hundred four billion, four hundred fifty-one million, four hundred fifty-nine thousand, eight hundred fifty-one".