10204120558949 has 2 divisors, whose sum is σ = 10204120558950. Its totient is φ = 10204120558948.

The previous prime is 10204120558943. The next prime is 10204120559033. The reversal of 10204120558949 is 94985502140201.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 8579082006049 + 1625038552900 = 2929007^2 + 1274770^2 .

It is a cyclic number.

It is not a de Polignac number, because 10204120558949 - 2²⁴ = 10204103781733 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 10204120558897 and 10204120558906.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (10204120558943) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5102060279474 + 5102060279475.

It is an arithmetic number, because the mean of its divisors is an integer number (5102060279475).

Almost surely, 2^{10204120558949} is an apocalyptic number.

It is an amenable number.

10204120558949 is a deficient number, since it is larger than the sum of its proper divisors (1).

10204120558949 is an equidigital number, since it uses as much as digits as its factorization.

10204120558949 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1036800, while the sum is 50.

The spelling of 10204120558949 in words is "ten trillion, two hundred four billion, one hundred twenty million, five hundred fifty-eight thousand, nine hundred forty-nine".