204121194737 has 2 divisors, whose sum is σ = 204121194738. Its totient is φ = 204121194736.

The previous prime is 204121194709. The next prime is 204121194743. The reversal of 204121194737 is 737491121402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 159549118096 + 44572076641 = 399436^2 + 211121^2 .

It is a cyclic number.

It is not a de Polignac number, because 204121194737 - 2¹⁸ = 204120932593 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 204121194694 and 204121194703.

It is not a weakly prime, because it can be changed into another prime (204121194337) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 102060597368 + 102060597369.

It is an arithmetic number, because the mean of its divisors is an integer number (102060597369).

Almost surely, 2^204121194737 is an apocalyptic number.

It is an amenable number.

204121194737 is a deficient number, since it is larger than the sum of its proper divisors (1).

204121194737 is an equidigital number, since it uses as much as digits as its factorization.

204121194737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 84672, while the sum is 41.

The spelling of 204121194737 in words is "two hundred four billion, one hundred twenty-one million, one hundred ninety-four thousand, seven hundred thirty-seven".