104146371781 has 2 divisors, whose sum is σ = 104146371782. Its totient is φ = 104146371780.

The previous prime is 104146371751. The next prime is 104146371841. The reversal of 104146371781 is 187173641401.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 90125443681 + 14020928100 = 300209^2 + 118410^2 .

It is an emirp because it is prime and its reverse (187173641401) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 104146371781 - 2³³ = 95556437189 is a prime.

It is a super-2 number, since 2×104146371781² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104146371731) 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, 52073185890 + 52073185891.

It is an arithmetic number, because the mean of its divisors is an integer number (52073185891).

Almost surely, 2^104146371781 is an apocalyptic number.

It is an amenable number.

104146371781 is a deficient number, since it is larger than the sum of its proper divisors (1).

104146371781 is an equidigital number, since it uses as much as digits as its factorization.

104146371781 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 112896, while the sum is 43.

The spelling of 104146371781 in words is "one hundred four billion, one hundred forty-six million, three hundred seventy-one thousand, seven hundred eighty-one".