204415621301 has 4 divisors (see below), whose sum is σ = 209401368204. Its totient is φ = 199429874400.

The previous prime is 204415621243. The next prime is 204415621303. The reversal of 204415621301 is 103126514402.

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

It can be written as a sum of positive squares in 2 ways, for example, as 96969337201 + 107446284100 = 311399^2 + 327790^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-204415621301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (204415621303) 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, 2492873390 + ... + 2492873471.

It is an arithmetic number, because the mean of its divisors is an integer number (52350342051).

Almost surely, 2^204415621301 is an apocalyptic number.

It is an amenable number.

204415621301 is a deficient number, since it is larger than the sum of its proper divisors (4985746903).

204415621301 is an equidigital number, since it uses as much as digits as its factorization.

204415621301 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4985746902.

The product of its (nonzero) digits is 5760, while the sum is 29.

The spelling of 204415621301 in words is "two hundred four billion, four hundred fifteen million, six hundred twenty-one thousand, three hundred one".