204455311514320 has 20 divisors (see below), whose sum is σ = 475358599270980. Its totient is φ = 81782124605696.

The previous prime is 204455311514299. The next prime is 204455311514323. The reversal of 204455311514320 is 23415113554402.

It can be written as a sum of positive squares in 2 ways, for example, as 94333122450576 + 110122189063744 = 9712524^2 + 10493912^2 .

It is a tau number, because it is divible by the number of its divisors (20).

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204455311514323) 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, 1277845696885 + ... + 1277845697044.

It is an arithmetic number, because the mean of its divisors is an integer number (23767929963549).

Almost surely, 2^{204455311514320} is an apocalyptic number.

204455311514320 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

204455311514320 is an abundant number, since it is smaller than the sum of its proper divisors (270903287756660).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

204455311514320 is a wasteful number, since it uses less digits than its factorization.

204455311514320 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2555691393942 (or 2555691393936 counting only the distinct ones).

The product of its (nonzero) digits is 288000, while the sum is 40.

The spelling of 204455311514320 in words is "two hundred four trillion, four hundred fifty-five billion, three hundred eleven million, five hundred fourteen thousand, three hundred twenty".