78711051737 has 2 divisors, whose sum is σ = 78711051738. Its totient is φ = 78711051736.

The previous prime is 78711051647. The next prime is 78711051779. The reversal of 78711051737 is 73715011787.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 68064113881 + 10646937856 = 260891^2 + 103184^2 .

It is a cyclic number.

It is not a de Polignac number, because 78711051737 - 2²⁰ = 78710003161 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 78711051691 and 78711051700.

It is not a weakly prime, because it can be changed into another prime (78711851737) 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, 39355525868 + 39355525869.

It is an arithmetic number, because the mean of its divisors is an integer number (39355525869).

Almost surely, 2^78711051737 is an apocalyptic number.

It is an amenable number.

78711051737 is a deficient number, since it is larger than the sum of its proper divisors (1).

78711051737 is an equidigital number, since it uses as much as digits as its factorization.

78711051737 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 288120, while the sum is 47.

The spelling of 78711051737 in words is "seventy-eight billion, seven hundred eleven million, fifty-one thousand, seven hundred thirty-seven".