103978655609 has 2 divisors, whose sum is σ = 103978655610. Its totient is φ = 103978655608.

The previous prime is 103978655581. The next prime is 103978655617. The reversal of 103978655609 is 906556879301.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 65470480384 + 38508175225 = 255872^2 + 196235^2 .

It is a cyclic number.

It is not a de Polignac number, because 103978655609 - 2¹⁶ = 103978590073 is a prime.

It is not a weakly prime, because it can be changed into another prime (103978655629) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 51989327804 + 51989327805.

It is an arithmetic number, because the mean of its divisors is an integer number (51989327805).

Almost surely, 2^103978655609 is an apocalyptic number.

It is an amenable number.

103978655609 is a deficient number, since it is larger than the sum of its proper divisors (1).

103978655609 is an equidigital number, since it uses as much as digits as its factorization.

103978655609 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12247200, while the sum is 59.

The spelling of 103978655609 in words is "one hundred three billion, nine hundred seventy-eight million, six hundred fifty-five thousand, six hundred nine".