104102139989 has 2 divisors, whose sum is σ = 104102139990. Its totient is φ = 104102139988.

The previous prime is 104102139971. The next prime is 104102139997. The reversal of 104102139989 is 989931201401.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 66288226225 + 37813913764 = 257465^2 + 194458^2 .

It is a cyclic number.

It is not a de Polignac number, because 104102139989 - 2⁸ = 104102139733 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (104102130989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 52051069994 + 52051069995.

It is an arithmetic number, because the mean of its divisors is an integer number (52051069995).

Almost surely, 2^104102139989 is an apocalyptic number.

It is an amenable number.

104102139989 is a deficient number, since it is larger than the sum of its proper divisors (1).

104102139989 is an equidigital number, since it uses as much as digits as its factorization.

104102139989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 139968, while the sum is 47.

The spelling of 104102139989 in words is "one hundred four billion, one hundred two million, one hundred thirty-nine thousand, nine hundred eighty-nine".