204012549567401 has 2 divisors, whose sum is σ = 204012549567402. Its totient is φ = 204012549567400.

The previous prime is 204012549567397. The next prime is 204012549567439. The reversal of 204012549567401 is 104765945210402.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 181580476032400 + 22432073535001 = 13475180^2 + 4736251^2 .

It is a cyclic number.

It is not a de Polignac number, because 204012549567401 - 2² = 204012549567397 is a prime.

It is a super-3 number, since 3×204012549567401³ (a number of 44 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a self number, because there is not a number n which added to its sum of digits gives 204012549567401.

It is not a weakly prime, because it can be changed into another prime (204012549567301) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102006274783700 + 102006274783701.

It is an arithmetic number, because the mean of its divisors is an integer number (102006274783701).

Almost surely, 2^{204012549567401} is an apocalyptic number.

It is an amenable number.

204012549567401 is a deficient number, since it is larger than the sum of its proper divisors (1).

204012549567401 is an equidigital number, since it uses as much as digits as its factorization.

204012549567401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2419200, while the sum is 50.

The spelling of 204012549567401 in words is "two hundred four trillion, twelve billion, five hundred forty-nine million, five hundred sixty-seven thousand, four hundred one".