107787721289 has 2 divisors, whose sum is σ = 107787721290. Its totient is φ = 107787721288.

The previous prime is 107787721243. The next prime is 107787721303. The reversal of 107787721289 is 982127787701.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 59776338064 + 48011383225 = 244492^2 + 219115^2 .

It is an emirp because it is prime and its reverse (982127787701) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 107787721289 - 2¹⁶ = 107787655753 is a prime.

It is not a weakly prime, because it can be changed into another prime (107787721889) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 53893860644 + 53893860645.

It is an arithmetic number, because the mean of its divisors is an integer number (53893860645).

Almost surely, 2^107787721289 is an apocalyptic number.

It is an amenable number.

107787721289 is a deficient number, since it is larger than the sum of its proper divisors (1).

107787721289 is an equidigital number, since it uses as much as digits as its factorization.

107787721289 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5531904, while the sum is 59.

The spelling of 107787721289 in words is "one hundred seven billion, seven hundred eighty-seven million, seven hundred twenty-one thousand, two hundred eighty-nine".