104578478261 has 2 divisors, whose sum is σ = 104578478262. Its totient is φ = 104578478260.

The previous prime is 104578478197. The next prime is 104578478317. The reversal of 104578478261 is 162874875401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 77350178161 + 27228300100 = 278119^2 + 165010^2 .

It is a cyclic number.

It is not a de Polignac number, because 104578478261 - 2⁶ = 104578478197 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104578474261) 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, 52289239130 + 52289239131.

It is an arithmetic number, because the mean of its divisors is an integer number (52289239131).

Almost surely, 2^104578478261 is an apocalyptic number.

It is an amenable number.

104578478261 is a deficient number, since it is larger than the sum of its proper divisors (1).

104578478261 is an equidigital number, since it uses as much as digits as its factorization.

104578478261 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3010560, while the sum is 53.

The spelling of 104578478261 in words is "one hundred four billion, five hundred seventy-eight million, four hundred seventy-eight thousand, two hundred sixty-one".