104139280549 has 2 divisors, whose sum is σ = 104139280550. Its totient is φ = 104139280548.

The previous prime is 104139280543. The next prime is 104139280577. The reversal of 104139280549 is 945082931401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 61203296449 + 42935984100 = 247393^2 + 207210^2 .

It is a cyclic number.

It is not a de Polignac number, because 104139280549 - 2¹¹ = 104139278501 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 104139280499 and 104139280508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104139280543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52069640274 + 52069640275.

It is an arithmetic number, because the mean of its divisors is an integer number (52069640275).

Almost surely, 2^104139280549 is an apocalyptic number.

It is an amenable number.

104139280549 is a deficient number, since it is larger than the sum of its proper divisors (1).

104139280549 is an equidigital number, since it uses as much as digits as its factorization.

104139280549 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 311040, while the sum is 46.

The spelling of 104139280549 in words is "one hundred four billion, one hundred thirty-nine million, two hundred eighty thousand, five hundred forty-nine".