204012551664547 has 2 divisors, whose sum is σ = 204012551664548. Its totient is φ = 204012551664546.

The previous prime is 204012551664499. The next prime is 204012551664577. The reversal of 204012551664547 is 745466155210402.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 204012551664547 - 2¹⁹ = 204012551140259 is a prime.

It is a super-2 number, since 2×204012551664547² (a number of 29 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 204012551664494 and 204012551664503.

It is not a weakly prime, because it can be changed into another prime (204012551664577) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (29) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102006275832273 + 102006275832274.

It is an arithmetic number, because the mean of its divisors is an integer number (102006275832274).

Almost surely, 2^{204012551664547} is an apocalyptic number.

204012551664547 is a deficient number, since it is larger than the sum of its proper divisors (1).

204012551664547 is an equidigital number, since it uses as much as digits as its factorization.

204012551664547 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8064000, while the sum is 52.

The spelling of 204012551664547 in words is "two hundred four trillion, twelve billion, five hundred fifty-one million, six hundred sixty-four thousand, five hundred forty-seven".